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/Problem01_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:54:48,787 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 00:54:48,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:54:48,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:54:48,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:54:48,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:54:48,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:54:48,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:54:48,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:54:48,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:54:48,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:54:48,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:54:48,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:54:48,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:54:48,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:54:48,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:54:48,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:54:48,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:54:48,876 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 00:54:48,909 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:54:48,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:54:48,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:54:48,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:54:48,914 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:54:48,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:54:48,915 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:54:48,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:54:48,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:54:48,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:54:48,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:54:48,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:54:48,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:54:48,916 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:54:48,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:54:48,916 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:54:48,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:54:48,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:54:48,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:54:48,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:54:48,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:54:48,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:54:48,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:54:48,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:54:48,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:54:48,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:54:48,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:54:48,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:54:48,922 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 00:54:49,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:54:49,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:54:49,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:54:49,196 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:54:49,196 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:54:49,197 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label02.c [2019-10-07 00:54:49,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a91bee5b/71bb7c7cd89e47cdb21779c1a958e7e1/FLAG45b68ea1b [2019-10-07 00:54:49,846 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:54:49,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label02.c [2019-10-07 00:54:49,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a91bee5b/71bb7c7cd89e47cdb21779c1a958e7e1/FLAG45b68ea1b [2019-10-07 00:54:50,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a91bee5b/71bb7c7cd89e47cdb21779c1a958e7e1 [2019-10-07 00:54:50,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:54:50,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:54:50,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:54:50,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:54:50,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:54:50,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5171f16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50, skipping insertion in model container [2019-10-07 00:54:50,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,147 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:54:50,198 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:54:50,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:54:50,738 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:54:50,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:54:50,872 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:54:50,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50 WrapperNode [2019-10-07 00:54:50,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:54:50,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:54:50,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:54:50,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:54:50,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (1/1) ... [2019-10-07 00:54:50,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:54:50,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:54:50,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:54:50,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:54:50,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (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 00:54:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:54:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:54:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:54:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:54:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:54:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:54:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:54:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:54:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:54:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:54:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:54:52,974 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:54:52,975 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:54:52,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:54:52 BoogieIcfgContainer [2019-10-07 00:54:52,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:54:52,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:54:52,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:54:52,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:54:52,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:54:50" (1/3) ... [2019-10-07 00:54:52,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c7d05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:54:52, skipping insertion in model container [2019-10-07 00:54:52,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:50" (2/3) ... [2019-10-07 00:54:52,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c7d05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:54:52, skipping insertion in model container [2019-10-07 00:54:52,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:54:52" (3/3) ... [2019-10-07 00:54:52,996 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label02.c [2019-10-07 00:54:53,008 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:54:53,018 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:54:53,030 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:54:53,067 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:54:53,067 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:54:53,069 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:54:53,069 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:54:53,069 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:54:53,069 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:54:53,070 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:54:53,070 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:54:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-07 00:54:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 00:54:53,117 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:53,118 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:53,119 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:53,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:53,124 INFO L82 PathProgramCache]: Analyzing trace with hash 826813922, now seen corresponding path program 1 times [2019-10-07 00:54:53,131 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:53,131 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:53,131 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:53,131 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:53,530 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 00:54:53,531 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:53,531 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:54:53,532 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:54:53,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:54:53,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:54:53,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:54:53,554 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-07 00:54:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:54:54,054 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-07 00:54:54,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:54:54,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-07 00:54:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:54:54,072 INFO L225 Difference]: With dead ends: 246 [2019-10-07 00:54:54,072 INFO L226 Difference]: Without dead ends: 157 [2019-10-07 00:54:54,076 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 00:54:54,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-07 00:54:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-07 00:54:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-07 00:54:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2019-10-07 00:54:54,171 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77 [2019-10-07 00:54:54,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:54:54,172 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2019-10-07 00:54:54,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:54:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2019-10-07 00:54:54,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-07 00:54:54,180 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:54,181 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:54:54,181 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:54,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:54,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1195672711, now seen corresponding path program 1 times [2019-10-07 00:54:54,182 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:54,183 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:54,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:54,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:54,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:54:54,346 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:54,347 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:54:54,347 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:54:54,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:54:54,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:54:54,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:54:54,350 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states. [2019-10-07 00:54:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:54:55,008 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions. [2019-10-07 00:54:55,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:54:55,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-07 00:54:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:54:55,015 INFO L225 Difference]: With dead ends: 402 [2019-10-07 00:54:55,015 INFO L226 Difference]: Without dead ends: 250 [2019-10-07 00:54:55,017 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 00:54:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-07 00:54:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2019-10-07 00:54:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-07 00:54:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions. [2019-10-07 00:54:55,064 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87 [2019-10-07 00:54:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:54:55,064 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions. [2019-10-07 00:54:55,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:54:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions. [2019-10-07 00:54:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-07 00:54:55,072 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:55,073 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:54:55,073 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:55,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2128694315, now seen corresponding path program 1 times [2019-10-07 00:54:55,074 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:55,074 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:55,074 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:55,074 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:54:55,245 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:55,245 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:54:55,245 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:54:55,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:54:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:54:55,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:54:55,247 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 3 states. [2019-10-07 00:54:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:54:55,685 INFO L93 Difference]: Finished difference Result 700 states and 1240 transitions. [2019-10-07 00:54:55,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:54:55,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-07 00:54:55,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:54:55,693 INFO L225 Difference]: With dead ends: 700 [2019-10-07 00:54:55,693 INFO L226 Difference]: Without dead ends: 467 [2019-10-07 00:54:55,696 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 00:54:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-07 00:54:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2019-10-07 00:54:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-07 00:54:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 799 transitions. [2019-10-07 00:54:55,735 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 799 transitions. Word has length 88 [2019-10-07 00:54:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:54:55,736 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 799 transitions. [2019-10-07 00:54:55,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:54:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 799 transitions. [2019-10-07 00:54:55,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-07 00:54:55,741 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:55,741 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:54:55,742 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:55,742 INFO L82 PathProgramCache]: Analyzing trace with hash 579788873, now seen corresponding path program 1 times [2019-10-07 00:54:55,742 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:55,742 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:55,743 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:55,743 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:55,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:54:55,839 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:55,839 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:54:55,840 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:54:55,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:54:55,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:54:55,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:54:55,841 INFO L87 Difference]: Start difference. First operand 467 states and 799 transitions. Second operand 3 states. [2019-10-07 00:54:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:54:56,240 INFO L93 Difference]: Finished difference Result 1310 states and 2339 transitions. [2019-10-07 00:54:56,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:54:56,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-07 00:54:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:54:56,249 INFO L225 Difference]: With dead ends: 1310 [2019-10-07 00:54:56,249 INFO L226 Difference]: Without dead ends: 848 [2019-10-07 00:54:56,252 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 00:54:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2019-10-07 00:54:56,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2019-10-07 00:54:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2019-10-07 00:54:56,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1398 transitions. [2019-10-07 00:54:56,304 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1398 transitions. Word has length 94 [2019-10-07 00:54:56,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:54:56,307 INFO L462 AbstractCegarLoop]: Abstraction has 848 states and 1398 transitions. [2019-10-07 00:54:56,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:54:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1398 transitions. [2019-10-07 00:54:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-07 00:54:56,318 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:56,319 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-07 00:54:56,319 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1929504678, now seen corresponding path program 1 times [2019-10-07 00:54:56,320 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:56,320 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:56,320 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:56,320 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:54:56,468 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:56,469 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:54:56,469 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 00:54:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:56,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:54:56,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:54:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 00:54:56,677 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:54:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 00:54:56,756 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 00:54:56,757 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-07 00:54:56,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:54:56,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:54:56,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 00:54:56,760 INFO L87 Difference]: Start difference. First operand 848 states and 1398 transitions. Second operand 3 states. [2019-10-07 00:54:57,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:54:57,210 INFO L93 Difference]: Finished difference Result 2378 states and 4057 transitions. [2019-10-07 00:54:57,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:54:57,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-10-07 00:54:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:54:57,228 INFO L225 Difference]: With dead ends: 2378 [2019-10-07 00:54:57,229 INFO L226 Difference]: Without dead ends: 1535 [2019-10-07 00:54:57,232 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 00:54:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2019-10-07 00:54:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1535. [2019-10-07 00:54:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2019-10-07 00:54:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2507 transitions. [2019-10-07 00:54:57,333 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2507 transitions. Word has length 113 [2019-10-07 00:54:57,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:54:57,334 INFO L462 AbstractCegarLoop]: Abstraction has 1535 states and 2507 transitions. [2019-10-07 00:54:57,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:54:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2507 transitions. [2019-10-07 00:54:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 00:54:57,343 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:57,343 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 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 00:54:57,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:54:57,557 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:57,558 INFO L82 PathProgramCache]: Analyzing trace with hash 719784990, now seen corresponding path program 1 times [2019-10-07 00:54:57,558 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:57,559 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:57,559 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:57,559 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:54:57,713 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:57,713 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:54:57,713 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 00:54:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:57,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:54:57,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:54:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:54:57,843 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:54:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:54:57,914 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:54:57,950 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-07 00:54:57,951 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:54:57,959 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:54:57,970 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:54:57,971 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:54:58,300 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 102 for LOIs [2019-10-07 00:54:58,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:54:58,769 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 00:54:58,777 INFO L168 Benchmark]: Toolchain (without parser) took 8645.12 ms. Allocated memory was 138.9 MB in the beginning and 334.5 MB in the end (delta: 195.6 MB). Free memory was 101.9 MB in the beginning and 86.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 211.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:58,778 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:54:58,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.35 ms. Allocated memory was 138.9 MB in the beginning and 206.6 MB in the end (delta: 67.6 MB). Free memory was 101.7 MB in the beginning and 172.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:58,780 INFO L168 Benchmark]: Boogie Preprocessor took 102.04 ms. Allocated memory is still 206.6 MB. Free memory was 172.1 MB in the beginning and 167.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:58,781 INFO L168 Benchmark]: RCFGBuilder took 2000.86 ms. Allocated memory was 206.6 MB in the beginning and 253.8 MB in the end (delta: 47.2 MB). Free memory was 167.1 MB in the beginning and 214.7 MB in the end (delta: -47.6 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:58,782 INFO L168 Benchmark]: TraceAbstraction took 5796.03 ms. Allocated memory was 253.8 MB in the beginning and 334.5 MB in the end (delta: 80.7 MB). Free memory was 214.7 MB in the beginning and 86.5 MB in the end (delta: 128.2 MB). Peak memory consumption was 209.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:58,787 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.35 ms. Allocated memory was 138.9 MB in the beginning and 206.6 MB in the end (delta: 67.6 MB). Free memory was 101.7 MB in the beginning and 172.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.04 ms. Allocated memory is still 206.6 MB. Free memory was 172.1 MB in the beginning and 167.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2000.86 ms. Allocated memory was 206.6 MB in the beginning and 253.8 MB in the end (delta: 47.2 MB). Free memory was 167.1 MB in the beginning and 214.7 MB in the end (delta: -47.6 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5796.03 ms. Allocated memory was 253.8 MB in the beginning and 334.5 MB in the end (delta: 80.7 MB). Free memory was 214.7 MB in the beginning and 86.5 MB in the end (delta: 128.2 MB). Peak memory consumption was 209.0 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...