java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:25:53,879 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:25:53,881 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:25:53,893 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:25:53,894 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:25:53,895 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:25:53,896 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:25:53,898 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:25:53,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:25:53,900 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:25:53,901 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:25:53,901 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:25:53,902 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:25:53,903 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:25:53,904 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:25:53,905 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:25:53,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:25:53,908 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:25:53,910 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:25:53,911 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:25:53,913 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:25:53,914 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:25:53,916 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:25:53,925 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:25:53,940 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:25:53,941 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:25:53,941 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:25:53,942 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:25:53,942 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:25:53,942 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:25:53,943 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:25:53,943 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:25:53,943 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:25:53,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:25:53,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:25:53,944 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:25:53,944 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:25:53,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:25:53,944 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:25:53,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:25:53,945 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:25:53,945 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:25:53,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:25:53,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:25:53,945 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:25:53,946 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:25:53,946 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:25:53,946 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:25:53,946 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:25:53,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:25:53,947 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:25:53,947 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:25:54,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:25:54,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:25:54,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:25:54,030 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:25:54,031 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:25:54,031 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30_false-unreach-call.c [2018-10-23 18:25:54,096 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69607e52c/97ee9d27da7248209a603b667940c6f5/FLAGf4467b793 [2018-10-23 18:25:54,858 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:25:54,859 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30_false-unreach-call.c [2018-10-23 18:25:54,888 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69607e52c/97ee9d27da7248209a603b667940c6f5/FLAGf4467b793 [2018-10-23 18:25:54,912 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/69607e52c/97ee9d27da7248209a603b667940c6f5 [2018-10-23 18:25:54,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:25:54,927 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:25:54,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:25:54,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:25:54,936 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:25:54,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:54" (1/1) ... [2018-10-23 18:25:54,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c5ece5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:54, skipping insertion in model container [2018-10-23 18:25:54,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:54" (1/1) ... [2018-10-23 18:25:54,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:25:55,079 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:25:56,054 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:25:56,059 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:25:56,507 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:25:56,530 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:25:56,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56 WrapperNode [2018-10-23 18:25:56,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:25:56,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:25:56,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:25:56,533 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:25:56,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:56,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:57,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:25:57,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:25:57,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:25:57,024 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:25:57,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:57,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:57,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:57,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:57,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:57,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:57,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... [2018-10-23 18:25:57,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:25:57,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:25:57,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:25:57,318 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:25:57,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:25:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:25:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:26:05,739 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:26:05,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:05 BoogieIcfgContainer [2018-10-23 18:26:05,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:26:05,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:26:05,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:26:05,746 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:26:05,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:25:54" (1/3) ... [2018-10-23 18:26:05,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67abaa69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:05, skipping insertion in model container [2018-10-23 18:26:05,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:56" (2/3) ... [2018-10-23 18:26:05,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67abaa69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:05, skipping insertion in model container [2018-10-23 18:26:05,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:05" (3/3) ... [2018-10-23 18:26:05,750 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label30_false-unreach-call.c [2018-10-23 18:26:05,760 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:26:05,771 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:26:05,788 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:26:05,828 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:26:05,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:26:05,829 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:26:05,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:26:05,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:26:05,830 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:26:05,830 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:26:05,830 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:26:05,830 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:26:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 18:26:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-23 18:26:05,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:05,872 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:26:05,875 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:05,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:05,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1473047758, now seen corresponding path program 1 times [2018-10-23 18:26:05,884 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:05,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:05,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:05,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:05,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:26:06,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:26:06,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:26:06,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:26:06,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:26:06,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:26:06,383 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 18:26:20,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:20,008 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-10-23 18:26:20,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:26:20,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-23 18:26:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:20,047 INFO L225 Difference]: With dead ends: 2093 [2018-10-23 18:26:20,047 INFO L226 Difference]: Without dead ends: 1495 [2018-10-23 18:26:20,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:26:20,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-10-23 18:26:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-10-23 18:26:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-10-23 18:26:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-10-23 18:26:20,188 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 25 [2018-10-23 18:26:20,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:20,190 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-10-23 18:26:20,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:26:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-10-23 18:26:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-23 18:26:20,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:20,195 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:26:20,196 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:20,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:20,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1204488774, now seen corresponding path program 1 times [2018-10-23 18:26:20,196 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:20,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:20,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:20,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:20,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:26:20,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:26:20,496 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:26:20,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:20,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:26:37,146 WARN L179 SmtUtils]: Spent 16.31 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-23 18:26:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:26:37,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:26:37,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:26:37,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:26:37,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:26:37,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:26:37,442 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 7 states. [2018-10-23 18:26:46,778 WARN L179 SmtUtils]: Spent 8.13 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 18:27:05,383 WARN L179 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 18:27:25,148 WARN L179 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-23 18:30:26,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 18:30:26,705 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:30:26,712 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:30:26,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:30:26 BoogieIcfgContainer [2018-10-23 18:30:26,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:30:26,713 INFO L168 Benchmark]: Toolchain (without parser) took 271787.34 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -527.7 MB). Peak memory consumption was 569.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:30:26,714 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:30:26,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1602.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-10-23 18:30:26,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 491.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -889.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:30:26,717 INFO L168 Benchmark]: Boogie Preprocessor took 293.77 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:30:26,718 INFO L168 Benchmark]: RCFGBuilder took 8422.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 461.5 MB). Peak memory consumption was 461.5 MB. Max. memory is 7.1 GB. [2018-10-23 18:30:26,718 INFO L168 Benchmark]: TraceAbstraction took 260970.49 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 332.4 MB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -270.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:30:26,724 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1602.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 491.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -889.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 293.77 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8422.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 461.5 MB). Peak memory consumption was 461.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 260970.49 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 332.4 MB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -270.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 80). Cancelled while BasicCegarLoop was constructing difference of abstraction (1488states) and FLOYD_HOARE automaton (currently 13 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (6704 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 260.8s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 242.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 717 SDtfs, 5249 SDslu, 699 SDs, 0 SdLazy, 9272 SolverSat, 2566 SolverUnsat, 87 SolverUnknown, 0 SolverNotchecked, 214.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 41.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1488occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 214 ConstructedInterpolants, 23 QuantifiedInterpolants, 427660 SizeOfPredicates, 1 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 22/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown