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/Problem15_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:30:47,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:30:47,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:30:47,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 03:30:47,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:30:47,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:30:47,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:30:47,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:30:47,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:30:47,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:30:47,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:30:47,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:30:47,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:30:47,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:30:47,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:30:47,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:30:47,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:30:47,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:30:47,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:30:47,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:30:47,595 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 03:30:47,625 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:30:47,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:30:47,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:30:47,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:30:47,627 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:30:47,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:30:47,627 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:30:47,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:30:47,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:30:47,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:30:47,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:30:47,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:30:47,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:30:47,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:30:47,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:30:47,629 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:30:47,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:30:47,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:30:47,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:30:47,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:30:47,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:30:47,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:47,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:30:47,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:30:47,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:30:47,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:30:47,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:30:47,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:30:47,632 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 03:30:47,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:30:47,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:30:47,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:30:47,915 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:30:47,916 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:30:47,916 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2019-10-07 03:30:47,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8a97b05/379d43f0ab824490a4fab5648cafeba4/FLAGe4d680b0f [2019-10-07 03:30:48,621 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:30:48,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2019-10-07 03:30:48,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8a97b05/379d43f0ab824490a4fab5648cafeba4/FLAGe4d680b0f [2019-10-07 03:30:48,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8a97b05/379d43f0ab824490a4fab5648cafeba4 [2019-10-07 03:30:48,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:30:48,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:30:48,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:48,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:30:48,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:30:48,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:48" (1/1) ... [2019-10-07 03:30:48,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad4c578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:48, skipping insertion in model container [2019-10-07 03:30:48,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:48" (1/1) ... [2019-10-07 03:30:48,800 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:30:48,884 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:30:49,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:49,884 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:30:50,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:50,403 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:30:50,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50 WrapperNode [2019-10-07 03:30:50,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:50,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:30:50,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:30:50,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:30:50,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (1/1) ... [2019-10-07 03:30:50,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (1/1) ... [2019-10-07 03:30:50,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (1/1) ... [2019-10-07 03:30:50,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (1/1) ... [2019-10-07 03:30:50,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (1/1) ... [2019-10-07 03:30:50,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (1/1) ... [2019-10-07 03:30:50,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (1/1) ... [2019-10-07 03:30:50,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:30:50,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:30:50,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:30:50,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:30:50,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (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 03:30:50,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:30:50,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:30:50,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:30:50,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:30:50,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:30:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:30:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:30:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:30:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:30:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:30:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:30:50,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:30:50,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:31:00,953 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:31:00,953 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:31:00,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:31:00 BoogieIcfgContainer [2019-10-07 03:31:00,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:31:00,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:31:00,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:31:00,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:31:00,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:30:48" (1/3) ... [2019-10-07 03:31:00,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129425bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:31:00, skipping insertion in model container [2019-10-07 03:31:00,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:50" (2/3) ... [2019-10-07 03:31:00,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129425bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:31:00, skipping insertion in model container [2019-10-07 03:31:00,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:31:00" (3/3) ... [2019-10-07 03:31:00,965 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2019-10-07 03:31:00,974 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:31:00,982 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:31:00,993 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:31:01,021 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:31:01,022 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:31:01,022 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:31:01,022 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:31:01,022 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:31:01,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:31:01,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:31:01,023 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:31:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:31:01,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:31:01,053 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:01,054 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:01,056 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:01,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:01,061 INFO L82 PathProgramCache]: Analyzing trace with hash 648051309, now seen corresponding path program 1 times [2019-10-07 03:31:01,069 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:01,069 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:01,069 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:01,070 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:01,277 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 03:31:01,278 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:01,278 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:01,278 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:31:01,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:31:01,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:31:01,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:01,300 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-07 03:31:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:05,658 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-07 03:31:05,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:31:05,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:31:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:05,684 INFO L225 Difference]: With dead ends: 953 [2019-10-07 03:31:05,684 INFO L226 Difference]: Without dead ends: 702 [2019-10-07 03:31:05,694 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-07 03:31:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 469. [2019-10-07 03:31:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-10-07 03:31:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 824 transitions. [2019-10-07 03:31:05,783 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 824 transitions. Word has length 11 [2019-10-07 03:31:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:05,784 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 824 transitions. [2019-10-07 03:31:05,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:31:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 824 transitions. [2019-10-07 03:31:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-07 03:31:05,786 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:05,786 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:05,786 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:05,787 INFO L82 PathProgramCache]: Analyzing trace with hash 514546391, now seen corresponding path program 1 times [2019-10-07 03:31:05,787 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:05,787 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:05,787 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:05,787 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:05,948 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 03:31:05,948 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:05,948 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:05,949 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:31:05,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:31:05,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:31:05,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:31:05,951 INFO L87 Difference]: Start difference. First operand 469 states and 824 transitions. Second operand 6 states. [2019-10-07 03:31:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:09,747 INFO L93 Difference]: Finished difference Result 1415 states and 2520 transitions. [2019-10-07 03:31:09,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:31:09,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-07 03:31:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:09,759 INFO L225 Difference]: With dead ends: 1415 [2019-10-07 03:31:09,760 INFO L226 Difference]: Without dead ends: 951 [2019-10-07 03:31:09,762 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 03:31:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2019-10-07 03:31:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 919. [2019-10-07 03:31:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-07 03:31:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1578 transitions. [2019-10-07 03:31:09,860 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1578 transitions. Word has length 23 [2019-10-07 03:31:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:09,860 INFO L462 AbstractCegarLoop]: Abstraction has 919 states and 1578 transitions. [2019-10-07 03:31:09,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:31:09,861 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1578 transitions. [2019-10-07 03:31:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-07 03:31:09,862 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:09,862 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] [2019-10-07 03:31:09,863 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:09,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:09,863 INFO L82 PathProgramCache]: Analyzing trace with hash 718224572, now seen corresponding path program 1 times [2019-10-07 03:31:09,864 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:09,864 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:09,865 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:09,865 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:10,036 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 03:31:10,037 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:10,037 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:10,037 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 03:31:10,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:31:10,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:31:10,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 03:31:10,039 INFO L87 Difference]: Start difference. First operand 919 states and 1578 transitions. Second operand 5 states. [2019-10-07 03:31:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:14,051 INFO L93 Difference]: Finished difference Result 2785 states and 4883 transitions. [2019-10-07 03:31:14,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:31:14,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-07 03:31:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:14,066 INFO L225 Difference]: With dead ends: 2785 [2019-10-07 03:31:14,067 INFO L226 Difference]: Without dead ends: 1871 [2019-10-07 03:31:14,071 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 03:31:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2019-10-07 03:31:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1396. [2019-10-07 03:31:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2019-10-07 03:31:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2170 transitions. [2019-10-07 03:31:14,128 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2170 transitions. Word has length 24 [2019-10-07 03:31:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:14,128 INFO L462 AbstractCegarLoop]: Abstraction has 1396 states and 2170 transitions. [2019-10-07 03:31:14,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:31:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2170 transitions. [2019-10-07 03:31:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 03:31:14,130 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:14,130 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] [2019-10-07 03:31:14,130 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:14,131 INFO L82 PathProgramCache]: Analyzing trace with hash 264123308, now seen corresponding path program 1 times [2019-10-07 03:31:14,131 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:14,131 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:14,131 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:14,131 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:14,220 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 03:31:14,221 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:14,221 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:14,221 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:31:14,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:31:14,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:31:14,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:14,223 INFO L87 Difference]: Start difference. First operand 1396 states and 2170 transitions. Second operand 4 states. [2019-10-07 03:31:22,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:22,622 INFO L93 Difference]: Finished difference Result 5318 states and 8524 transitions. [2019-10-07 03:31:22,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:31:22,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-07 03:31:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:22,652 INFO L225 Difference]: With dead ends: 5318 [2019-10-07 03:31:22,653 INFO L226 Difference]: Without dead ends: 3927 [2019-10-07 03:31:22,658 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2019-10-07 03:31:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3471. [2019-10-07 03:31:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3471 states. [2019-10-07 03:31:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 5405 transitions. [2019-10-07 03:31:22,791 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 5405 transitions. Word has length 32 [2019-10-07 03:31:22,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:22,791 INFO L462 AbstractCegarLoop]: Abstraction has 3471 states and 5405 transitions. [2019-10-07 03:31:22,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:31:22,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 5405 transitions. [2019-10-07 03:31:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-07 03:31:22,803 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:22,803 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 03:31:22,803 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1046155695, now seen corresponding path program 1 times [2019-10-07 03:31:22,804 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:22,804 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:22,805 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:22,805 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 03:31:22,961 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:22,962 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:22,962 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:31:22,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:31:22,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:31:22,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:22,963 INFO L87 Difference]: Start difference. First operand 3471 states and 5405 transitions. Second operand 4 states. [2019-10-07 03:31:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:26,352 INFO L93 Difference]: Finished difference Result 11571 states and 18176 transitions. [2019-10-07 03:31:26,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:31:26,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-07 03:31:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:26,397 INFO L225 Difference]: With dead ends: 11571 [2019-10-07 03:31:26,398 INFO L226 Difference]: Without dead ends: 8105 [2019-10-07 03:31:26,410 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8105 states. [2019-10-07 03:31:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8105 to 7582. [2019-10-07 03:31:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7582 states. [2019-10-07 03:31:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7582 states to 7582 states and 11077 transitions. [2019-10-07 03:31:26,771 INFO L78 Accepts]: Start accepts. Automaton has 7582 states and 11077 transitions. Word has length 51 [2019-10-07 03:31:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:26,772 INFO L462 AbstractCegarLoop]: Abstraction has 7582 states and 11077 transitions. [2019-10-07 03:31:26,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:31:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7582 states and 11077 transitions. [2019-10-07 03:31:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-07 03:31:26,787 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:26,788 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:26,788 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:26,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1497158940, now seen corresponding path program 1 times [2019-10-07 03:31:26,789 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:26,789 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:26,789 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:26,790 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-07 03:31:27,066 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:27,066 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:31:27,066 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 03:31:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:27,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:31:27,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:31:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 03:31:27,433 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:31:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-07 03:31:27,591 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:31:27,650 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-07 03:31:27,651 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:31:27,660 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:31:27,669 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:31:27,669 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:31:27,839 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-07 03:31:28,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 41 [2019-10-07 03:31:28,508 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5430 conjuctions. This might take some time... [2019-10-07 03:31:28,618 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 41 [2019-10-07 03:31:28,801 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5430 conjuctions. This might take some time... [2019-10-07 03:31:28,950 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 20 [2019-10-07 03:31:29,023 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8272 conjuctions. This might take some time... [2019-10-07 03:31:29,245 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 20 [2019-10-07 03:31:29,303 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8272 conjuctions. This might take some time... [2019-10-07 03:31:29,800 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:29,802 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 03:31:29,808 INFO L168 Benchmark]: Toolchain (without parser) took 41024.15 ms. Allocated memory was 141.6 MB in the beginning and 592.4 MB in the end (delta: 450.9 MB). Free memory was 100.1 MB in the beginning and 237.3 MB in the end (delta: -137.2 MB). Peak memory consumption was 313.7 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:29,809 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.4 MB in the beginning and 123.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:31:29,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1620.56 ms. Allocated memory was 141.6 MB in the beginning and 238.6 MB in the end (delta: 97.0 MB). Free memory was 99.9 MB in the beginning and 176.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:29,811 INFO L168 Benchmark]: Boogie Preprocessor took 205.37 ms. Allocated memory is still 238.6 MB. Free memory was 176.9 MB in the beginning and 164.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:29,812 INFO L168 Benchmark]: RCFGBuilder took 10344.60 ms. Allocated memory was 238.6 MB in the beginning and 328.7 MB in the end (delta: 90.2 MB). Free memory was 164.4 MB in the beginning and 246.2 MB in the end (delta: -81.8 MB). Peak memory consumption was 168.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:29,813 INFO L168 Benchmark]: TraceAbstraction took 28848.94 ms. Allocated memory was 328.7 MB in the beginning and 592.4 MB in the end (delta: 263.7 MB). Free memory was 246.2 MB in the beginning and 237.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 272.7 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:29,824 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 141.6 MB. Free memory was 123.4 MB in the beginning and 123.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1620.56 ms. Allocated memory was 141.6 MB in the beginning and 238.6 MB in the end (delta: 97.0 MB). Free memory was 99.9 MB in the beginning and 176.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 205.37 ms. Allocated memory is still 238.6 MB. Free memory was 176.9 MB in the beginning and 164.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10344.60 ms. Allocated memory was 238.6 MB in the beginning and 328.7 MB in the end (delta: 90.2 MB). Free memory was 164.4 MB in the beginning and 246.2 MB in the end (delta: -81.8 MB). Peak memory consumption was 168.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28848.94 ms. Allocated memory was 328.7 MB in the beginning and 592.4 MB in the end (delta: 263.7 MB). Free memory was 246.2 MB in the beginning and 237.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 272.7 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...