MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 08:28:39,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 08:28:39,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 08:28:39,850 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 08:28:39,851 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 08:28:39,852 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 08:28:39,853 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 08:28:39,854 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 08:28:39,856 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 08:28:39,857 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 08:28:39,858 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 08:28:39,858 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 08:28:39,859 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 08:28:39,860 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 08:28:39,861 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 08:28:39,861 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 08:28:39,862 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 08:28:39,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 08:28:39,866 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 08:28:39,867 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 08:28:39,868 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 08:28:39,869 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 08:28:39,871 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 08:28:39,872 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 08:28:39,872 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 08:28:39,873 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 08:28:39,873 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 08:28:39,874 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 08:28:39,874 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 08:28:39,875 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 08:28:39,875 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 08:28:39,876 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 08:28:39,877 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 08:28:39,877 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 08:28:39,878 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 08:28:39,878 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 08:28:39,878 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 08:28:39,879 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 08:28:39,880 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 08:28:39,880 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 08:28:39,894 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 08:28:39,894 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 08:28:39,895 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 08:28:39,896 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 08:28:39,896 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 08:28:39,896 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:28:39,896 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 08:28:39,896 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 08:28:39,897 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 08:28:39,897 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 08:28:39,897 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 08:28:39,897 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 08:28:39,897 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 08:28:39,897 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 08:28:39,898 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:28:39,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 08:28:39,898 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 08:28:39,898 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 08:28:39,898 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 08:28:39,899 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 08:28:39,899 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 08:28:39,899 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 08:28:39,899 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 08:28:39,899 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 08:28:39,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:28:39,900 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 08:28:39,900 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 08:28:39,900 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 08:28:39,900 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 08:28:39,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 08:28:39,939 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 08:28:39,942 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 08:28:39,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 08:28:39,944 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 08:28:39,944 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 08:28:40,015 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/b1891888516c4e6aa17662cccb3b5b4a/FLAGc8792985b [2020-06-22 08:28:40,349 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 08:28:40,350 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 08:28:40,350 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-06-22 08:28:40,357 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/b1891888516c4e6aa17662cccb3b5b4a/FLAGc8792985b [2020-06-22 08:28:40,741 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/b1891888516c4e6aa17662cccb3b5b4a [2020-06-22 08:28:40,752 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 08:28:40,754 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 08:28:40,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 08:28:40,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 08:28:40,758 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 08:28:40,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c370b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40, skipping insertion in model container [2020-06-22 08:28:40,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 08:28:40,787 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 08:28:40,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:28:41,015 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 08:28:41,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:28:41,051 INFO L195 MainTranslator]: Completed translation [2020-06-22 08:28:41,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41 WrapperNode [2020-06-22 08:28:41,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 08:28:41,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 08:28:41,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 08:28:41,053 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 08:28:41,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 08:28:41,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 08:28:41,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 08:28:41,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 08:28:41,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 08:28:41,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 08:28:41,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 08:28:41,122 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 08:28:41,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:28:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-06-22 08:28:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 08:28:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 08:28:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-06-22 08:28:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-06-22 08:28:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-06-22 08:28:41,488 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 08:28:41,489 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2020-06-22 08:28:41,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41 BoogieIcfgContainer [2020-06-22 08:28:41,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 08:28:41,491 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 08:28:41,491 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 08:28:41,493 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 08:28:41,494 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,516 INFO L313 BlockEncoder]: Initial Icfg 52 locations, 59 edges [2020-06-22 08:28:41,518 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 08:28:41,518 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 08:28:41,519 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 08:28:41,519 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:28:41,521 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 08:28:41,522 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 08:28:41,522 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 08:28:41,557 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 08:28:41,615 INFO L200 BlockEncoder]: SBE split 27 edges [2020-06-22 08:28:41,621 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 08:28:41,623 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:28:41,664 INFO L100 BaseMinimizeStates]: Removed 18 edges and 9 locations by large block encoding [2020-06-22 08:28:41,666 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 08:28:41,668 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 08:28:41,668 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:28:41,669 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 08:28:41,669 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 08:28:41,670 INFO L313 BlockEncoder]: Encoded RCFG 42 locations, 145 edges [2020-06-22 08:28:41,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:28:41 BasicIcfg [2020-06-22 08:28:41,670 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 08:28:41,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 08:28:41,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 08:28:41,675 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 08:28:41,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 08:28:40" (1/4) ... [2020-06-22 08:28:41,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fcdf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:41" (2/4) ... [2020-06-22 08:28:41,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fcdf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41" (3/4) ... [2020-06-22 08:28:41,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fcdf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:28:41" (4/4) ... [2020-06-22 08:28:41,679 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 08:28:41,689 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 08:28:41,697 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-06-22 08:28:41,713 INFO L257 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-06-22 08:28:41,742 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 08:28:41,743 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 08:28:41,743 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 08:28:41,743 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 08:28:41,744 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 08:28:41,744 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 08:28:41,744 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 08:28:41,744 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 08:28:41,744 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 08:28:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-06-22 08:28:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:28:41,766 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:41,767 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:28:41,767 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION]=== [2020-06-22 08:28:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:41,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1183140613, now seen corresponding path program 1 times [2020-06-22 08:28:41,774 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:41,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:41,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:41,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:41,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:41,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 08:28:41,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:28:41,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:28:41,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:28:41,941 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-06-22 08:28:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:42,202 INFO L93 Difference]: Finished difference Result 81 states and 268 transitions. [2020-06-22 08:28:42,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:28:42,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-06-22 08:28:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:42,217 INFO L225 Difference]: With dead ends: 81 [2020-06-22 08:28:42,217 INFO L226 Difference]: Without dead ends: 42 [2020-06-22 08:28:42,221 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 [2020-06-22 08:28:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-06-22 08:28:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-06-22 08:28:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-06-22 08:28:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 80 transitions. [2020-06-22 08:28:42,261 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 80 transitions. Word has length 6 [2020-06-22 08:28:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:42,261 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 80 transitions. [2020-06-22 08:28:42,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:28:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 80 transitions. [2020-06-22 08:28:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:28:42,262 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:42,262 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:28:42,263 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION]=== [2020-06-22 08:28:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:42,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1182872494, now seen corresponding path program 1 times [2020-06-22 08:28:42,263 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:42,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:42,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:42,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:42,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:42,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 08:28:42,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:28:42,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:28:42,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:28:42,303 INFO L87 Difference]: Start difference. First operand 42 states and 80 transitions. Second operand 3 states. [2020-06-22 08:28:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:42,410 INFO L93 Difference]: Finished difference Result 42 states and 80 transitions. [2020-06-22 08:28:42,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:28:42,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-06-22 08:28:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:42,412 INFO L225 Difference]: With dead ends: 42 [2020-06-22 08:28:42,412 INFO L226 Difference]: Without dead ends: 38 [2020-06-22 08:28:42,413 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 [2020-06-22 08:28:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-06-22 08:28:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-06-22 08:28:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-06-22 08:28:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 72 transitions. [2020-06-22 08:28:42,419 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 72 transitions. Word has length 6 [2020-06-22 08:28:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:42,419 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 72 transitions. [2020-06-22 08:28:42,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:28:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 72 transitions. [2020-06-22 08:28:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:28:42,420 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:42,420 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:28:42,420 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION]=== [2020-06-22 08:28:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:42,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1182872496, now seen corresponding path program 1 times [2020-06-22 08:28:42,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:42,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:42,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:42,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:42,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:42,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 08:28:42,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:28:42,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:28:42,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:28:42,463 INFO L87 Difference]: Start difference. First operand 38 states and 72 transitions. Second operand 3 states. [2020-06-22 08:28:42,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:42,635 INFO L93 Difference]: Finished difference Result 109 states and 207 transitions. [2020-06-22 08:28:42,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:28:42,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-06-22 08:28:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:42,638 INFO L225 Difference]: With dead ends: 109 [2020-06-22 08:28:42,638 INFO L226 Difference]: Without dead ends: 74 [2020-06-22 08:28:42,639 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 [2020-06-22 08:28:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-06-22 08:28:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2020-06-22 08:28:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-06-22 08:28:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 96 transitions. [2020-06-22 08:28:42,647 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 96 transitions. Word has length 6 [2020-06-22 08:28:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:42,648 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 96 transitions. [2020-06-22 08:28:42,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:28:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 96 transitions. [2020-06-22 08:28:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:28:42,649 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:42,649 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:28:42,649 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION]=== [2020-06-22 08:28:42,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:42,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1182932078, now seen corresponding path program 1 times [2020-06-22 08:28:42,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:42,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:42,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:42,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:28:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:28:42,694 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2020-06-22 08:28:42,714 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-06-22 08:28:42,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:28:42 BasicIcfg [2020-06-22 08:28:42,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 08:28:42,718 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 08:28:42,718 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 08:28:42,721 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 08:28:42,722 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:42,722 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:42,722 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:42,722 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:42,722 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:42,722 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 08:28:42,723 INFO L168 Benchmark]: Toolchain (without parser) took 1969.91 ms. Allocated memory was 649.6 MB in the beginning and 680.5 MB in the end (delta: 30.9 MB). Free memory was 564.1 MB in the beginning and 491.1 MB in the end (delta: 73.1 MB). Peak memory consumption was 104.0 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:42,724 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:28:42,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.59 ms. Allocated memory was 649.6 MB in the beginning and 680.5 MB in the end (delta: 30.9 MB). Free memory was 564.1 MB in the beginning and 644.1 MB in the end (delta: -79.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:42,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.40 ms. Allocated memory is still 680.5 MB. Free memory was 644.1 MB in the beginning and 641.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:42,726 INFO L168 Benchmark]: Boogie Preprocessor took 26.25 ms. Allocated memory is still 680.5 MB. Free memory was 641.4 MB in the beginning and 640.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:42,727 INFO L168 Benchmark]: RCFGBuilder took 368.61 ms. Allocated memory is still 680.5 MB. Free memory was 640.0 MB in the beginning and 615.0 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:42,728 INFO L168 Benchmark]: BlockEncodingV2 took 179.55 ms. Allocated memory is still 680.5 MB. Free memory was 615.0 MB in the beginning and 600.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:42,728 INFO L168 Benchmark]: TraceAbstraction took 1045.97 ms. Allocated memory is still 680.5 MB. Free memory was 598.8 MB in the beginning and 492.4 MB in the end (delta: 106.4 MB). Peak memory consumption was 106.4 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:42,729 INFO L168 Benchmark]: BuchiAutomizer took 4.36 ms. Allocated memory is still 680.5 MB. Free memory was 492.4 MB in the beginning and 491.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:42,733 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 52 locations, 59 edges - StatisticsResult: Encoded RCFG 42 locations, 145 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 297.59 ms. Allocated memory was 649.6 MB in the beginning and 680.5 MB in the end (delta: 30.9 MB). Free memory was 564.1 MB in the beginning and 644.1 MB in the end (delta: -79.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 42.40 ms. Allocated memory is still 680.5 MB. Free memory was 644.1 MB in the beginning and 641.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 26.25 ms. Allocated memory is still 680.5 MB. Free memory was 641.4 MB in the beginning and 640.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 368.61 ms. Allocated memory is still 680.5 MB. Free memory was 640.0 MB in the beginning and 615.0 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 179.55 ms. Allocated memory is still 680.5 MB. Free memory was 615.0 MB in the beginning and 600.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 50.3 GB. * TraceAbstraction took 1045.97 ms. Allocated memory is still 680.5 MB. Free memory was 598.8 MB in the beginning and 492.4 MB in the end (delta: 106.4 MB). Peak memory consumption was 106.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.36 ms. Allocated memory is still 680.5 MB. Free memory was 492.4 MB in the beginning and 491.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int i, j, tmp; [L6] int length = __VERIFIER_nondet_int(); [L7] COND TRUE length < 1 [L7] length = 1 [L9] COND FALSE !(length % 2 == 0) [L10] int *arr = alloca(length); [L12] i=0 [L12] COND TRUE i