java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:31:36,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:31:36,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:31:36,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:31:36,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:31:36,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:31:36,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:31:36,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:31:36,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:31:36,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:31:36,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:31:36,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:31:36,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:31:36,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:31:36,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:31:36,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:31:36,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:31:36,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:31:36,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:31:36,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:31:36,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:31:36,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:31:36,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:31:36,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:31:36,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:31:36,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:31:36,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:31:36,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:31:36,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 03:31:36,940 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:31:36,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:31:36,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:31:36,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:31:36,942 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:31:36,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:31:36,942 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:31:36,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:31:36,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:31:36,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:31:36,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:31:36,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:31:36,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:31:36,944 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:31:36,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:31:36,944 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:31:36,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:31:36,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:31:36,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:31:36,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:31:36,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:31:36,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:31:36,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:31:36,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:31:36,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:31:36,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:31:36,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:31:36,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:31:36,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 03:31:37,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:31:37,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:31:37,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:31:37,228 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:31:37,228 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:31:37,229 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21.c [2019-10-07 03:31:37,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7675b9c8/edfe1421ffbd4ff8bde200138f62ac0d/FLAG30cf72d7c [2019-10-07 03:31:37,923 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:31:37,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label21.c [2019-10-07 03:31:37,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7675b9c8/edfe1421ffbd4ff8bde200138f62ac0d/FLAG30cf72d7c [2019-10-07 03:31:38,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7675b9c8/edfe1421ffbd4ff8bde200138f62ac0d [2019-10-07 03:31:38,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:31:38,129 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:31:38,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:31:38,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:31:38,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:31:38,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:31:38" (1/1) ... [2019-10-07 03:31:38,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a425a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:38, skipping insertion in model container [2019-10-07 03:31:38,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:31:38" (1/1) ... [2019-10-07 03:31:38,143 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:31:38,206 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:31:39,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:31:39,100 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:31:39,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:31:39,469 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:31:39,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39 WrapperNode [2019-10-07 03:31:39,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:31:39,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:31:39,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:31:39,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:31:39,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (1/1) ... [2019-10-07 03:31:39,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (1/1) ... [2019-10-07 03:31:39,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (1/1) ... [2019-10-07 03:31:39,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (1/1) ... [2019-10-07 03:31:39,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (1/1) ... [2019-10-07 03:31:39,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (1/1) ... [2019-10-07 03:31:39,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (1/1) ... [2019-10-07 03:31:39,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:31:39,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:31:39,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:31:39,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:31:39,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2019-10-07 03:31:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:31:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:31:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:31:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:31:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:31:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:31:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:31:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:31:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:31:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:31:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:31:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:31:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:32:01,780 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:32:01,781 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:32:01,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:32:01 BoogieIcfgContainer [2019-10-07 03:32:01,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:32:01,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:32:01,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:32:01,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:32:01,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:31:38" (1/3) ... [2019-10-07 03:32:01,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d06e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:32:01, skipping insertion in model container [2019-10-07 03:32:01,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:39" (2/3) ... [2019-10-07 03:32:01,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d06e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:32:01, skipping insertion in model container [2019-10-07 03:32:01,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:32:01" (3/3) ... [2019-10-07 03:32:01,793 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label21.c [2019-10-07 03:32:01,803 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:32:01,811 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:32:01,823 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:32:01,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:32:01,850 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:32:01,850 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:32:01,851 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:32:01,851 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:32:01,851 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:32:01,851 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:32:01,851 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:32:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:32:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:32:01,880 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:32:01,881 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:32:01,883 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:32:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:32:01,888 INFO L82 PathProgramCache]: Analyzing trace with hash 863562559, now seen corresponding path program 1 times [2019-10-07 03:32:01,897 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:32:01,897 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:01,897 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:01,898 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:32:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:32:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:32:02,132 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:02,132 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:32:02,133 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:32:02,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:32:02,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:32:02,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:32:02,153 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 3 states. [2019-10-07 03:32:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:32:04,072 INFO L93 Difference]: Finished difference Result 718 states and 1389 transitions. [2019-10-07 03:32:04,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:32:04,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:32:04,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:32:04,093 INFO L225 Difference]: With dead ends: 718 [2019-10-07 03:32:04,093 INFO L226 Difference]: Without dead ends: 471 [2019-10-07 03:32:04,103 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:32:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-10-07 03:32:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2019-10-07 03:32:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-07 03:32:04,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 867 transitions. [2019-10-07 03:32:04,186 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 867 transitions. Word has length 11 [2019-10-07 03:32:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:32:04,187 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 867 transitions. [2019-10-07 03:32:04,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:32:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 867 transitions. [2019-10-07 03:32:04,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-07 03:32:04,190 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:32:04,190 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 03:32:04,190 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:32:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:32:04,191 INFO L82 PathProgramCache]: Analyzing trace with hash 9419049, now seen corresponding path program 1 times [2019-10-07 03:32:04,191 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:32:04,191 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:04,191 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:04,192 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:32:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:32:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:32:04,447 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:04,447 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:32:04,447 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:32:04,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:32:04,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:32:04,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:32:04,450 INFO L87 Difference]: Start difference. First operand 467 states and 867 transitions. Second operand 6 states. [2019-10-07 03:32:06,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:32:06,476 INFO L93 Difference]: Finished difference Result 1405 states and 2643 transitions. [2019-10-07 03:32:06,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:32:06,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2019-10-07 03:32:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:32:06,492 INFO L225 Difference]: With dead ends: 1405 [2019-10-07 03:32:06,493 INFO L226 Difference]: Without dead ends: 943 [2019-10-07 03:32:06,495 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:32:06,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2019-10-07 03:32:06,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 919. [2019-10-07 03:32:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-07 03:32:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1683 transitions. [2019-10-07 03:32:06,548 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1683 transitions. Word has length 59 [2019-10-07 03:32:06,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:32:06,549 INFO L462 AbstractCegarLoop]: Abstraction has 919 states and 1683 transitions. [2019-10-07 03:32:06,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:32:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1683 transitions. [2019-10-07 03:32:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-07 03:32:06,551 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:32:06,551 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 03:32:06,552 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:32:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:32:06,552 INFO L82 PathProgramCache]: Analyzing trace with hash 704523306, now seen corresponding path program 1 times [2019-10-07 03:32:06,552 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:32:06,553 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:06,553 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:06,553 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:32:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:32:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:32:06,786 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:06,786 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:32:06,787 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:32:06,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:32:06,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:32:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:32:06,788 INFO L87 Difference]: Start difference. First operand 919 states and 1683 transitions. Second operand 6 states. [2019-10-07 03:32:08,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:32:08,804 INFO L93 Difference]: Finished difference Result 2757 states and 5097 transitions. [2019-10-07 03:32:08,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:32:08,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-10-07 03:32:08,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:32:08,819 INFO L225 Difference]: With dead ends: 2757 [2019-10-07 03:32:08,820 INFO L226 Difference]: Without dead ends: 1843 [2019-10-07 03:32:08,822 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:32:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2019-10-07 03:32:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1172. [2019-10-07 03:32:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2019-10-07 03:32:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 2056 transitions. [2019-10-07 03:32:08,891 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 2056 transitions. Word has length 62 [2019-10-07 03:32:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:32:08,891 INFO L462 AbstractCegarLoop]: Abstraction has 1172 states and 2056 transitions. [2019-10-07 03:32:08,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:32:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 2056 transitions. [2019-10-07 03:32:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-07 03:32:08,903 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:32:08,904 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 03:32:08,904 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:32:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:32:08,904 INFO L82 PathProgramCache]: Analyzing trace with hash -569651312, now seen corresponding path program 1 times [2019-10-07 03:32:08,904 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:32:08,905 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:08,905 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:08,905 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:32:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:32:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:32:09,050 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:09,050 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:32:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:32:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:32:09,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:32:09,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:32:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:32:09,258 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:32:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:32:09,351 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:32:09,351 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-07 03:32:09,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:32:09,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:32:09,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-07 03:32:09,353 INFO L87 Difference]: Start difference. First operand 1172 states and 2056 transitions. Second operand 5 states. [2019-10-07 03:32:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:32:11,851 INFO L93 Difference]: Finished difference Result 3294 states and 5825 transitions. [2019-10-07 03:32:11,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:32:11,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2019-10-07 03:32:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:32:11,871 INFO L225 Difference]: With dead ends: 3294 [2019-10-07 03:32:11,871 INFO L226 Difference]: Without dead ends: 2127 [2019-10-07 03:32:11,875 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-10-07 03:32:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2019-10-07 03:32:11,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2106. [2019-10-07 03:32:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2019-10-07 03:32:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3256 transitions. [2019-10-07 03:32:11,947 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3256 transitions. Word has length 118 [2019-10-07 03:32:11,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:32:11,947 INFO L462 AbstractCegarLoop]: Abstraction has 2106 states and 3256 transitions. [2019-10-07 03:32:11,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:32:11,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3256 transitions. [2019-10-07 03:32:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-07 03:32:11,951 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:32:11,951 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 03:32:12,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:32:12,157 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:32:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:32:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash -182691311, now seen corresponding path program 1 times [2019-10-07 03:32:12,157 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:32:12,157 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:12,158 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:12,158 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:32:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:32:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:32:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 20 proven. 117 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 03:32:12,409 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:32:12,409 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:32:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:32:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:32:12,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:32:12,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:32:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:32:12,593 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:32:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 58 proven. 51 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 03:32:12,693 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:32:12,721 INFO L162 IcfgInterpreter]: Started Sifa with 63 locations of interest [2019-10-07 03:32:12,721 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:32:12,727 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:32:12,734 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:32:12,735 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:32:12,933 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 57 for LOIs [2019-10-07 03:32:13,091 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 32 [2019-10-07 03:32:13,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 32 [2019-10-07 03:32:13,633 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 29 [2019-10-07 03:32:13,728 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 29 [2019-10-07 03:32:14,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:32:14,150 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:32:14,164 INFO L168 Benchmark]: Toolchain (without parser) took 36030.45 ms. Allocated memory was 142.1 MB in the beginning and 458.2 MB in the end (delta: 316.1 MB). Free memory was 99.7 MB in the beginning and 289.1 MB in the end (delta: -189.4 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:32:14,165 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:32:14,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1341.63 ms. Allocated memory was 142.1 MB in the beginning and 207.6 MB in the end (delta: 65.5 MB). Free memory was 99.5 MB in the beginning and 129.3 MB in the end (delta: -29.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:32:14,169 INFO L168 Benchmark]: Boogie Preprocessor took 194.29 ms. Allocated memory is still 207.6 MB. Free memory was 129.3 MB in the beginning and 118.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:32:14,169 INFO L168 Benchmark]: RCFGBuilder took 22116.97 ms. Allocated memory was 207.6 MB in the beginning and 314.0 MB in the end (delta: 106.4 MB). Free memory was 118.5 MB in the beginning and 232.6 MB in the end (delta: -114.1 MB). Peak memory consumption was 124.4 MB. Max. memory is 7.1 GB. [2019-10-07 03:32:14,171 INFO L168 Benchmark]: TraceAbstraction took 12371.25 ms. Allocated memory was 314.0 MB in the beginning and 458.2 MB in the end (delta: 144.2 MB). Free memory was 232.6 MB in the beginning and 289.1 MB in the end (delta: -56.5 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. [2019-10-07 03:32:14,179 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1341.63 ms. Allocated memory was 142.1 MB in the beginning and 207.6 MB in the end (delta: 65.5 MB). Free memory was 99.5 MB in the beginning and 129.3 MB in the end (delta: -29.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.29 ms. Allocated memory is still 207.6 MB. Free memory was 129.3 MB in the beginning and 118.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 22116.97 ms. Allocated memory was 207.6 MB in the beginning and 314.0 MB in the end (delta: 106.4 MB). Free memory was 118.5 MB in the beginning and 232.6 MB in the end (delta: -114.1 MB). Peak memory consumption was 124.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12371.25 ms. Allocated memory was 314.0 MB in the beginning and 458.2 MB in the end (delta: 144.2 MB). Free memory was 232.6 MB in the beginning and 289.1 MB in the end (delta: -56.5 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...