13.76/6.16 MAYBE 13.76/6.16 13.76/6.16 Ultimate: Cannot open display: 13.76/6.16 This is Ultimate 0.1.24-8dc7c08-m 13.76/6.16 [2019-03-28 12:47:00,590 INFO L170 SettingsManager]: Resetting all preferences to default values... 13.76/6.16 [2019-03-28 12:47:00,592 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values 13.76/6.16 [2019-03-28 12:47:00,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 13.76/6.16 [2019-03-28 12:47:00,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values 13.76/6.16 [2019-03-28 12:47:00,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values 13.76/6.16 [2019-03-28 12:47:00,607 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values 13.76/6.16 [2019-03-28 12:47:00,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values 13.76/6.16 [2019-03-28 12:47:00,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values 13.76/6.16 [2019-03-28 12:47:00,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values 13.76/6.16 [2019-03-28 12:47:00,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 13.76/6.16 [2019-03-28 12:47:00,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values 13.76/6.16 [2019-03-28 12:47:00,613 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values 13.76/6.16 [2019-03-28 12:47:00,614 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values 13.76/6.16 [2019-03-28 12:47:00,615 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values 13.76/6.16 [2019-03-28 12:47:00,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values 13.76/6.16 [2019-03-28 12:47:00,616 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values 13.76/6.16 [2019-03-28 12:47:00,618 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values 13.76/6.16 [2019-03-28 12:47:00,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values 13.76/6.16 [2019-03-28 12:47:00,622 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values 13.76/6.16 [2019-03-28 12:47:00,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values 13.76/6.16 [2019-03-28 12:47:00,624 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values 13.76/6.16 [2019-03-28 12:47:00,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 13.76/6.16 [2019-03-28 12:47:00,626 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... 13.76/6.16 [2019-03-28 12:47:00,627 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values 13.76/6.16 [2019-03-28 12:47:00,627 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values 13.76/6.16 [2019-03-28 12:47:00,628 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values 13.76/6.16 [2019-03-28 12:47:00,629 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... 13.76/6.16 [2019-03-28 12:47:00,629 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values 13.76/6.16 [2019-03-28 12:47:00,630 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values 13.76/6.16 [2019-03-28 12:47:00,630 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values 13.76/6.16 [2019-03-28 12:47:00,631 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values 13.76/6.16 [2019-03-28 12:47:00,632 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 13.76/6.16 [2019-03-28 12:47:00,632 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values 13.76/6.16 [2019-03-28 12:47:00,633 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 13.76/6.16 [2019-03-28 12:47:00,633 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... 13.76/6.16 [2019-03-28 12:47:00,633 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values 13.76/6.16 [2019-03-28 12:47:00,634 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values 13.76/6.16 [2019-03-28 12:47:00,635 INFO L181 SettingsManager]: Finished resetting all preferences to default values... 13.76/6.16 [2019-03-28 12:47:00,635 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf 13.76/6.16 [2019-03-28 12:47:00,650 INFO L110 SettingsManager]: Loading preferences was successful 13.76/6.16 [2019-03-28 12:47:00,651 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: 13.76/6.16 [2019-03-28 12:47:00,652 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: 13.76/6.16 [2019-03-28 12:47:00,652 INFO L133 SettingsManager]: * Rewrite not-equals=true 13.76/6.16 [2019-03-28 12:47:00,652 INFO L133 SettingsManager]: * Create parallel compositions if possible=false 13.76/6.16 [2019-03-28 12:47:00,652 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE 13.76/6.16 [2019-03-28 12:47:00,653 INFO L133 SettingsManager]: * Use SBE=true 13.76/6.16 [2019-03-28 12:47:00,653 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: 13.76/6.16 [2019-03-28 12:47:00,653 INFO L133 SettingsManager]: * Use old map elimination=false 13.76/6.16 [2019-03-28 12:47:00,653 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false 13.76/6.16 [2019-03-28 12:47:00,653 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION 13.76/6.16 [2019-03-28 12:47:00,653 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true 13.76/6.16 [2019-03-28 12:47:00,654 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES 13.76/6.16 [2019-03-28 12:47:00,654 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true 13.76/6.16 [2019-03-28 12:47:00,654 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 13.76/6.16 [2019-03-28 12:47:00,654 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: 13.76/6.16 [2019-03-28 12:47:00,654 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false 13.76/6.16 [2019-03-28 12:47:00,654 INFO L133 SettingsManager]: * Check division by zero=IGNORE 13.76/6.16 [2019-03-28 12:47:00,655 INFO L133 SettingsManager]: * Check if freed pointer was valid=false 13.76/6.16 [2019-03-28 12:47:00,655 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false 13.76/6.16 [2019-03-28 12:47:00,655 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE 13.76/6.16 [2019-03-28 12:47:00,655 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: 13.76/6.16 [2019-03-28 12:47:00,655 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements 13.76/6.16 [2019-03-28 12:47:00,656 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump 13.76/6.16 [2019-03-28 12:47:00,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 13.76/6.16 [2019-03-28 12:47:00,656 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: 13.76/6.16 [2019-03-28 12:47:00,656 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles 13.76/6.16 [2019-03-28 12:47:00,656 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL 13.76/6.16 [2019-03-28 12:47:00,657 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 13.76/6.16 [2019-03-28 12:47:00,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp 13.76/6.16 [2019-03-28 12:47:00,696 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized 13.76/6.16 [2019-03-28 12:47:00,700 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. 13.76/6.16 [2019-03-28 12:47:00,701 INFO L271 PluginConnector]: Initializing CDTParser... 13.76/6.16 [2019-03-28 12:47:00,702 INFO L276 PluginConnector]: CDTParser initialized 13.76/6.16 [2019-03-28 12:47:00,702 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c 13.76/6.16 [2019-03-28 12:47:00,765 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/5e7456dd354040ff9b17ba3bd662e2a2/FLAG701911525 13.76/6.16 [2019-03-28 12:47:01,121 INFO L307 CDTParser]: Found 1 translation units. 13.76/6.16 [2019-03-28 12:47:01,121 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c 13.76/6.16 [2019-03-28 12:47:01,122 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. 13.76/6.16 [2019-03-28 12:47:01,128 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/5e7456dd354040ff9b17ba3bd662e2a2/FLAG701911525 13.76/6.16 [2019-03-28 12:47:01,537 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/5e7456dd354040ff9b17ba3bd662e2a2 13.76/6.16 [2019-03-28 12:47:01,550 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### 13.76/6.16 [2019-03-28 12:47:01,552 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. 13.76/6.16 [2019-03-28 12:47:01,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- 13.76/6.16 [2019-03-28 12:47:01,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... 13.76/6.16 [2019-03-28 12:47:01,556 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized 13.76/6.16 [2019-03-28 12:47:01,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4083e9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01, skipping insertion in model container 13.76/6.16 [2019-03-28 12:47:01,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode 13.76/6.16 [2019-03-28 12:47:01,585 INFO L176 MainTranslator]: Built tables and reachable declarations 13.76/6.16 [2019-03-28 12:47:01,750 INFO L206 PostProcessor]: Analyzing one entry point: main 13.76/6.16 [2019-03-28 12:47:01,763 INFO L191 MainTranslator]: Completed pre-run 13.76/6.16 [2019-03-28 12:47:01,843 INFO L206 PostProcessor]: Analyzing one entry point: main 13.76/6.16 [2019-03-28 12:47:01,859 INFO L195 MainTranslator]: Completed translation 13.76/6.16 [2019-03-28 12:47:01,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01 WrapperNode 13.76/6.16 [2019-03-28 12:47:01,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- 13.76/6.16 [2019-03-28 12:47:01,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- 13.76/6.16 [2019-03-28 12:47:01,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... 13.76/6.16 [2019-03-28 12:47:01,861 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized 13.76/6.16 [2019-03-28 12:47:01,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- 13.76/6.16 [2019-03-28 12:47:01,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- 13.76/6.16 [2019-03-28 12:47:01,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... 13.76/6.16 [2019-03-28 12:47:01,903 INFO L276 PluginConnector]: Boogie Preprocessor initialized 13.76/6.16 [2019-03-28 12:47:01,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 [2019-03-28 12:47:01,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- 13.76/6.16 [2019-03-28 12:47:01,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- 13.76/6.16 [2019-03-28 12:47:01,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... 13.76/6.16 [2019-03-28 12:47:01,931 INFO L276 PluginConnector]: RCFGBuilder initialized 13.76/6.16 [2019-03-28 12:47:01,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (1/1) ... 13.76/6.16 No working directory specified, using /export/starexec/sandbox/solver/bin/z3 13.76/6.16 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) 13.76/6.16 Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 13.76/6.16 [2019-03-28 12:47:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int 13.76/6.16 [2019-03-28 12:47:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start 13.76/6.16 [2019-03-28 12:47:02,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start 13.76/6.16 [2019-03-28 12:47:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int 13.76/6.16 [2019-03-28 12:47:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack 13.76/6.16 [2019-03-28 12:47:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc 13.76/6.16 [2019-03-28 12:47:02,241 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) 13.76/6.16 [2019-03-28 12:47:02,241 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. 13.76/6.16 [2019-03-28 12:47:02,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:47:02 BoogieIcfgContainer 13.76/6.16 [2019-03-28 12:47:02,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- 13.76/6.16 [2019-03-28 12:47:02,244 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- 13.76/6.16 [2019-03-28 12:47:02,244 INFO L271 PluginConnector]: Initializing BlockEncodingV2... 13.76/6.16 [2019-03-28 12:47:02,246 INFO L276 PluginConnector]: BlockEncodingV2 initialized 13.76/6.16 [2019-03-28 12:47:02,247 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:47:02" (1/1) ... 13.76/6.16 [2019-03-28 12:47:02,263 INFO L313 BlockEncoder]: Initial Icfg 30 locations, 38 edges 13.76/6.16 [2019-03-28 12:47:02,265 INFO L258 BlockEncoder]: Using Remove infeasible edges 13.76/6.16 [2019-03-28 12:47:02,265 INFO L263 BlockEncoder]: Using Maximize final states 13.76/6.16 [2019-03-28 12:47:02,266 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false 13.76/6.16 [2019-03-28 12:47:02,266 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE 13.76/6.16 [2019-03-28 12:47:02,268 INFO L296 BlockEncoder]: Using Remove sink states 13.76/6.16 [2019-03-28 12:47:02,269 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true 13.76/6.16 [2019-03-28 12:47:02,269 INFO L179 BlockEncoder]: Using Rewrite not-equals 13.76/6.16 [2019-03-28 12:47:02,292 INFO L185 BlockEncoder]: Using Use SBE 13.76/6.16 [2019-03-28 12:47:02,315 INFO L200 BlockEncoder]: SBE split 10 edges 13.76/6.16 [2019-03-28 12:47:02,321 INFO L70 emoveInfeasibleEdges]: Removed 3 edges and 0 locations because of local infeasibility 13.76/6.16 [2019-03-28 12:47:02,323 INFO L71 MaximizeFinalStates]: 0 new accepting states 13.76/6.16 [2019-03-28 12:47:02,351 INFO L100 BaseMinimizeStates]: Removed 16 edges and 8 locations by large block encoding 13.76/6.16 [2019-03-28 12:47:02,354 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states 13.76/6.16 [2019-03-28 12:47:02,357 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility 13.76/6.16 [2019-03-28 12:47:02,357 INFO L71 MaximizeFinalStates]: 0 new accepting states 13.76/6.16 [2019-03-28 12:47:02,357 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding 13.76/6.16 [2019-03-28 12:47:02,358 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states 13.76/6.16 [2019-03-28 12:47:02,358 INFO L313 BlockEncoder]: Encoded RCFG 20 locations, 36 edges 13.76/6.16 [2019-03-28 12:47:02,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:47:02 BasicIcfg 13.76/6.16 [2019-03-28 12:47:02,359 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- 13.76/6.16 [2019-03-28 12:47:02,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- 13.76/6.16 [2019-03-28 12:47:02,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... 13.76/6.16 [2019-03-28 12:47:02,363 INFO L276 PluginConnector]: TraceAbstraction initialized 13.76/6.16 [2019-03-28 12:47:02,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.03 12:47:01" (1/4) ... 13.76/6.16 [2019-03-28 12:47:02,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdd054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:47:02, skipping insertion in model container 13.76/6.16 [2019-03-28 12:47:02,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:47:01" (2/4) ... 13.76/6.16 [2019-03-28 12:47:02,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdd054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:47:02, skipping insertion in model container 13.76/6.16 [2019-03-28 12:47:02,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:47:02" (3/4) ... 13.76/6.16 [2019-03-28 12:47:02,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdd054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:47:02, skipping insertion in model container 13.76/6.16 [2019-03-28 12:47:02,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:47:02" (4/4) ... 13.76/6.16 [2019-03-28 12:47:02,367 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 13.76/6.16 [2019-03-28 12:47:02,378 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION 13.76/6.16 [2019-03-28 12:47:02,386 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. 13.76/6.16 [2019-03-28 12:47:02,403 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. 13.76/6.16 [2019-03-28 12:47:02,431 INFO L133 ementStrategyFactory]: Using default assertion order modulation 13.76/6.16 [2019-03-28 12:47:02,432 INFO L382 AbstractCegarLoop]: Interprodecural is true 13.76/6.16 [2019-03-28 12:47:02,432 INFO L383 AbstractCegarLoop]: Hoare is true 13.76/6.16 [2019-03-28 12:47:02,432 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates 13.76/6.16 [2019-03-28 12:47:02,433 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE 13.76/6.16 [2019-03-28 12:47:02,433 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION 13.76/6.16 [2019-03-28 12:47:02,433 INFO L387 AbstractCegarLoop]: Difference is false 13.76/6.16 [2019-03-28 12:47:02,433 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA 13.76/6.16 [2019-03-28 12:47:02,433 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== 13.76/6.16 [2019-03-28 12:47:02,449 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. 13.76/6.16 [2019-03-28 12:47:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 13.76/6.16 [2019-03-28 12:47:02,456 INFO L394 BasicCegarLoop]: Found error trace 13.76/6.16 [2019-03-28 12:47:02,456 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] 13.76/6.16 [2019-03-28 12:47:02,457 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION]=== 13.76/6.16 [2019-03-28 12:47:02,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 13.76/6.16 [2019-03-28 12:47:02,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1674118285, now seen corresponding path program 1 times 13.76/6.16 [2019-03-28 12:47:02,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 13.76/6.16 [2019-03-28 12:47:02,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 13.76/6.16 [2019-03-28 12:47:02,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 13.76/6.16 [2019-03-28 12:47:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 13.76/6.16 [2019-03-28 12:47:02,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 13.76/6.16 [2019-03-28 12:47:02,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 13.76/6.16 [2019-03-28 12:47:02,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 13.76/6.16 [2019-03-28 12:47:02,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 13.76/6.16 [2019-03-28 12:47:02,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 13.76/6.16 [2019-03-28 12:47:02,640 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. 13.76/6.16 [2019-03-28 12:47:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 13.76/6.16 [2019-03-28 12:47:02,795 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. 13.76/6.16 [2019-03-28 12:47:02,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 13.76/6.16 [2019-03-28 12:47:02,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 13.76/6.16 [2019-03-28 12:47:02,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 13.76/6.16 [2019-03-28 12:47:02,811 INFO L225 Difference]: With dead ends: 53 13.76/6.16 [2019-03-28 12:47:02,811 INFO L226 Difference]: Without dead ends: 37 13.76/6.16 [2019-03-28 12:47:02,815 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 13.76/6.16 [2019-03-28 12:47:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. 13.76/6.16 [2019-03-28 12:47:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. 13.76/6.16 [2019-03-28 12:47:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. 13.76/6.16 [2019-03-28 12:47:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 39 transitions. 13.76/6.16 [2019-03-28 12:47:02,856 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 39 transitions. Word has length 7 13.76/6.16 [2019-03-28 12:47:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. 13.76/6.16 [2019-03-28 12:47:02,857 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 39 transitions. 13.76/6.16 [2019-03-28 12:47:02,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 13.76/6.16 [2019-03-28 12:47:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 39 transitions. 13.76/6.16 [2019-03-28 12:47:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 13.76/6.16 [2019-03-28 12:47:02,858 INFO L394 BasicCegarLoop]: Found error trace 13.76/6.16 [2019-03-28 12:47:02,858 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] 13.76/6.16 [2019-03-28 12:47:02,858 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION]=== 13.76/6.16 [2019-03-28 12:47:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 13.76/6.16 [2019-03-28 12:47:02,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1674088494, now seen corresponding path program 1 times 13.76/6.16 [2019-03-28 12:47:02,859 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 13.76/6.16 [2019-03-28 12:47:02,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 13.76/6.16 [2019-03-28 12:47:02,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 13.76/6.16 [2019-03-28 12:47:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 13.76/6.16 [2019-03-28 12:47:02,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 13.76/6.16 [2019-03-28 12:47:02,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 13.76/6.16 [2019-03-28 12:47:02,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 13.76/6.16 [2019-03-28 12:47:02,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 13.76/6.16 [2019-03-28 12:47:02,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 13.76/6.16 [2019-03-28 12:47:02,902 INFO L87 Difference]: Start difference. First operand 21 states and 39 transitions. Second operand 3 states. 13.76/6.16 [2019-03-28 12:47:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 13.76/6.16 [2019-03-28 12:47:02,953 INFO L93 Difference]: Finished difference Result 21 states and 39 transitions. 13.76/6.16 [2019-03-28 12:47:02,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 13.76/6.16 [2019-03-28 12:47:02,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 13.76/6.16 [2019-03-28 12:47:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 13.76/6.16 [2019-03-28 12:47:02,954 INFO L225 Difference]: With dead ends: 21 13.76/6.16 [2019-03-28 12:47:02,954 INFO L226 Difference]: Without dead ends: 17 13.76/6.16 [2019-03-28 12:47:02,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 13.76/6.16 [2019-03-28 12:47:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. 13.76/6.16 [2019-03-28 12:47:02,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. 13.76/6.16 [2019-03-28 12:47:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. 13.76/6.16 [2019-03-28 12:47:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 31 transitions. 13.76/6.16 [2019-03-28 12:47:02,984 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 31 transitions. Word has length 7 13.76/6.16 [2019-03-28 12:47:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. 13.76/6.16 [2019-03-28 12:47:02,984 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 31 transitions. 13.76/6.16 [2019-03-28 12:47:02,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 13.76/6.16 [2019-03-28 12:47:02,984 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 31 transitions. 13.76/6.16 [2019-03-28 12:47:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 13.76/6.16 [2019-03-28 12:47:02,985 INFO L394 BasicCegarLoop]: Found error trace 13.76/6.16 [2019-03-28 12:47:02,985 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] 13.76/6.16 [2019-03-28 12:47:02,985 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION]=== 13.76/6.16 [2019-03-28 12:47:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 13.76/6.16 [2019-03-28 12:47:02,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1674088492, now seen corresponding path program 1 times 13.76/6.16 [2019-03-28 12:47:02,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 13.76/6.16 [2019-03-28 12:47:02,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 13.76/6.16 [2019-03-28 12:47:02,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 13.76/6.16 [2019-03-28 12:47:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 13.76/6.16 [2019-03-28 12:47:03,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 13.76/6.16 [2019-03-28 12:47:03,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 13.76/6.16 [2019-03-28 12:47:03,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states 13.76/6.16 [2019-03-28 12:47:03,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. 13.76/6.16 [2019-03-28 12:47:03,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 13.76/6.16 [2019-03-28 12:47:03,025 INFO L87 Difference]: Start difference. First operand 17 states and 31 transitions. Second operand 4 states. 13.76/6.16 [2019-03-28 12:47:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 13.76/6.16 [2019-03-28 12:47:03,094 INFO L93 Difference]: Finished difference Result 41 states and 69 transitions. 13.76/6.16 [2019-03-28 12:47:03,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 13.76/6.16 [2019-03-28 12:47:03,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 13.76/6.16 [2019-03-28 12:47:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 13.76/6.16 [2019-03-28 12:47:03,096 INFO L225 Difference]: With dead ends: 41 13.76/6.16 [2019-03-28 12:47:03,096 INFO L226 Difference]: Without dead ends: 29 13.76/6.16 [2019-03-28 12:47:03,097 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 13.76/6.16 [2019-03-28 12:47:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. 13.76/6.16 [2019-03-28 12:47:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. 13.76/6.16 [2019-03-28 12:47:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. 13.76/6.16 [2019-03-28 12:47:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 33 transitions. 13.76/6.16 [2019-03-28 12:47:03,101 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 33 transitions. Word has length 7 13.76/6.16 [2019-03-28 12:47:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. 13.76/6.16 [2019-03-28 12:47:03,102 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 33 transitions. 13.76/6.16 [2019-03-28 12:47:03,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. 13.76/6.16 [2019-03-28 12:47:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 33 transitions. 13.76/6.16 [2019-03-28 12:47:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 13.76/6.16 [2019-03-28 12:47:03,103 INFO L394 BasicCegarLoop]: Found error trace 13.76/6.16 [2019-03-28 12:47:03,103 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] 13.76/6.16 [2019-03-28 12:47:03,103 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION]=== 13.76/6.16 [2019-03-28 12:47:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 13.76/6.16 [2019-03-28 12:47:03,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1674088491, now seen corresponding path program 1 times 13.76/6.16 [2019-03-28 12:47:03,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 13.76/6.16 [2019-03-28 12:47:03,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 13.76/6.16 [2019-03-28 12:47:03,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:03,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:03,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 13.76/6.16 [2019-03-28 12:47:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 13.76/6.16 [2019-03-28 12:47:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 13.76/6.16 [2019-03-28 12:47:03,148 INFO L469 BasicCegarLoop]: Counterexample might be feasible 13.76/6.16 [2019-03-28 12:47:03,169 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg 13.76/6.16 [2019-03-28 12:47:03,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:47:03 BasicIcfg 13.76/6.16 [2019-03-28 12:47:03,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- 13.76/6.16 [2019-03-28 12:47:03,173 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- 13.76/6.16 [2019-03-28 12:47:03,173 INFO L271 PluginConnector]: Initializing BuchiAutomizer... 13.76/6.16 [2019-03-28 12:47:03,176 INFO L276 PluginConnector]: BuchiAutomizer initialized 13.76/6.16 [2019-03-28 12:47:03,177 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 13.76/6.16 [2019-03-28 12:47:03,177 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 13.76/6.16 [2019-03-28 12:47:03,177 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 13.76/6.16 [2019-03-28 12:47:03,177 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 13.76/6.16 [2019-03-28 12:47:03,177 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 13.76/6.16 [2019-03-28 12:47:03,177 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- 13.76/6.16 [2019-03-28 12:47:03,178 INFO L168 Benchmark]: Toolchain (without parser) took 1627.38 ms. Allocated memory was 649.6 MB in the beginning and 685.2 MB in the end (delta: 35.7 MB). Free memory was 564.9 MB in the beginning and 553.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 47.3 MB. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,180 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 591.9 MB. There was no memory consumed. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.02 ms. Allocated memory was 649.6 MB in the beginning and 685.2 MB in the end (delta: 35.7 MB). Free memory was 564.9 MB in the beginning and 652.8 MB in the end (delta: -87.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 685.2 MB. Free memory was 652.8 MB in the beginning and 648.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,182 INFO L168 Benchmark]: Boogie Preprocessor took 27.17 ms. Allocated memory is still 685.2 MB. Free memory was 648.4 MB in the beginning and 647.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,182 INFO L168 Benchmark]: RCFGBuilder took 312.54 ms. Allocated memory is still 685.2 MB. Free memory was 647.0 MB in the beginning and 624.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,183 INFO L168 Benchmark]: BlockEncodingV2 took 115.37 ms. Allocated memory is still 685.2 MB. Free memory was 624.9 MB in the beginning and 616.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,184 INFO L168 Benchmark]: TraceAbstraction took 812.49 ms. Allocated memory is still 685.2 MB. Free memory was 616.8 MB in the beginning and 554.6 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,184 INFO L168 Benchmark]: BuchiAutomizer took 4.43 ms. Allocated memory is still 685.2 MB. Free memory was 554.6 MB in the beginning and 553.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. 13.76/6.16 [2019-03-28 12:47:03,188 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### 13.76/6.16 --- Results --- 13.76/6.16 * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: 13.76/6.16 - StatisticsResult: Initial Icfg 13.76/6.16 30 locations, 38 edges 13.76/6.16 - StatisticsResult: Encoded RCFG 13.76/6.16 20 locations, 36 edges 13.76/6.16 * Results from de.uni_freiburg.informatik.ultimate.core: 13.76/6.16 - StatisticsResult: Toolchain Benchmarks 13.76/6.16 Benchmark results are: 13.76/6.16 * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 591.9 MB. There was no memory consumed. Max. memory is 50.3 GB. 13.76/6.16 * CACSL2BoogieTranslator took 308.02 ms. Allocated memory was 649.6 MB in the beginning and 685.2 MB in the end (delta: 35.7 MB). Free memory was 564.9 MB in the beginning and 652.8 MB in the end (delta: -87.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 50.3 GB. 13.76/6.16 * Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 685.2 MB. Free memory was 652.8 MB in the beginning and 648.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 50.3 GB. 13.76/6.16 * Boogie Preprocessor took 27.17 ms. Allocated memory is still 685.2 MB. Free memory was 648.4 MB in the beginning and 647.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. 13.76/6.16 * RCFGBuilder took 312.54 ms. Allocated memory is still 685.2 MB. Free memory was 647.0 MB in the beginning and 624.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 50.3 GB. 13.76/6.16 * BlockEncodingV2 took 115.37 ms. Allocated memory is still 685.2 MB. Free memory was 624.9 MB in the beginning and 616.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. 13.76/6.16 * TraceAbstraction took 812.49 ms. Allocated memory is still 685.2 MB. Free memory was 616.8 MB in the beginning and 554.6 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 50.3 GB. 13.76/6.16 * BuchiAutomizer took 4.43 ms. Allocated memory is still 685.2 MB. Free memory was 554.6 MB in the beginning and 553.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. 13.76/6.16 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: 13.76/6.16 - CounterExampleResult [Line: 16]: pointer dereference may fail 13.76/6.16 pointer dereference may fail 13.76/6.16 We found a FailurePath: 13.76/6.16 [L5] int i, j; 13.76/6.16 [L6] int val; 13.76/6.16 [L7] int length = __VERIFIER_nondet_int(); 13.76/6.16 [L8] COND FALSE !(length < 1) 13.76/6.16 [L9] int *arr = alloca(length); 13.76/6.16 [L10] COND FALSE !(!arr) 13.76/6.16 [L11] i=0 13.76/6.16 [L11] COND TRUE i