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/Problem18_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:38:51,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:38:51,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:38:51,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 03:38:51,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:38:51,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:38:51,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:38:51,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:38:51,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:38:51,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:38:51,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:38:51,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:38:51,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:38:51,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:38:51,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:38:51,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:38:51,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:38:51,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:38:51,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:38:51,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:38:51,356 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 03:38:51,382 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:38:51,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:38:51,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:38:51,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:38:51,386 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:38:51,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:38:51,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:38:51,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:38:51,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:38:51,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:38:51,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:38:51,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:38:51,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:38:51,389 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:38:51,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:38:51,389 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:38:51,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:38:51,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:38:51,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:38:51,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:38:51,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:38:51,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:38:51,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:38:51,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:38:51,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:38:51,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:38:51,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:38:51,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:38:51,393 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 03:38:51,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:38:51,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:38:51,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:38:51,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:38:51,681 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:38:51,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label16.c [2019-10-07 03:38:51,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbed4ac7/340084a9adfe4632ad50144b86a3fd6b/FLAGd4c169b88 [2019-10-07 03:38:52,496 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:38:52,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label16.c [2019-10-07 03:38:52,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbed4ac7/340084a9adfe4632ad50144b86a3fd6b/FLAGd4c169b88 [2019-10-07 03:38:52,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbed4ac7/340084a9adfe4632ad50144b86a3fd6b [2019-10-07 03:38:52,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:38:52,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:38:52,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:38:52,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:38:52,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:38:52,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:38:52" (1/1) ... [2019-10-07 03:38:52,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2089993a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:52, skipping insertion in model container [2019-10-07 03:38:52,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:38:52" (1/1) ... [2019-10-07 03:38:52,682 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:38:52,817 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:38:54,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:38:54,077 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:38:54,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:38:54,555 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:38:54,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54 WrapperNode [2019-10-07 03:38:54,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:38:54,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:38:54,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:38:54,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:38:54,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (1/1) ... [2019-10-07 03:38:54,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (1/1) ... [2019-10-07 03:38:54,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (1/1) ... [2019-10-07 03:38:54,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (1/1) ... [2019-10-07 03:38:54,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (1/1) ... [2019-10-07 03:38:54,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (1/1) ... [2019-10-07 03:38:54,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (1/1) ... [2019-10-07 03:38:54,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:38:54,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:38:54,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:38:54,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:38:54,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (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 03:38:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:38:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:38:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:38:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:38:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 03:38:54,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:38:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:38:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:38:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 03:38:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:38:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:38:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:38:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:38:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:38:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:40:27,551 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:40:27,551 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:40:27,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:40:27 BoogieIcfgContainer [2019-10-07 03:40:27,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:40:27,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:40:27,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:40:27,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:40:27,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:38:52" (1/3) ... [2019-10-07 03:40:27,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70625982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:40:27, skipping insertion in model container [2019-10-07 03:40:27,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:38:54" (2/3) ... [2019-10-07 03:40:27,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70625982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:40:27, skipping insertion in model container [2019-10-07 03:40:27,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:40:27" (3/3) ... [2019-10-07 03:40:27,562 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label16.c [2019-10-07 03:40:27,572 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:40:27,581 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:40:27,593 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:40:27,626 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:40:27,626 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:40:27,626 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:40:27,627 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:40:27,627 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:40:27,627 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:40:27,627 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:40:27,627 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:40:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-07 03:40:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:40:27,662 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:40:27,663 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:40:27,665 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:40:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:40:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1816953254, now seen corresponding path program 1 times [2019-10-07 03:40:27,680 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:40:27,680 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:27,681 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:27,681 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:40:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:40:27,916 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 03:40:27,917 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:27,918 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:40:27,918 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:40:27,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:40:27,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:40:27,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:40:27,939 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 3 states. [2019-10-07 03:40:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:40:31,287 INFO L93 Difference]: Finished difference Result 1393 states and 2727 transitions. [2019-10-07 03:40:31,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:40:31,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:40:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:40:31,315 INFO L225 Difference]: With dead ends: 1393 [2019-10-07 03:40:31,315 INFO L226 Difference]: Without dead ends: 921 [2019-10-07 03:40:31,324 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:40:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-07 03:40:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 899. [2019-10-07 03:40:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-07 03:40:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1739 transitions. [2019-10-07 03:40:31,448 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1739 transitions. Word has length 11 [2019-10-07 03:40:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:40:31,450 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1739 transitions. [2019-10-07 03:40:31,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:40:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1739 transitions. [2019-10-07 03:40:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 03:40:31,454 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:40:31,454 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] [2019-10-07 03:40:31,455 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:40:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:40:31,456 INFO L82 PathProgramCache]: Analyzing trace with hash -199327366, now seen corresponding path program 1 times [2019-10-07 03:40:31,456 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:40:31,457 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:31,457 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:31,458 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:40:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:40:31,638 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 03:40:31,639 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:31,639 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:40:31,642 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:40:31,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:40:31,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:40:31,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:40:31,646 INFO L87 Difference]: Start difference. First operand 899 states and 1739 transitions. Second operand 6 states. [2019-10-07 03:40:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:40:35,577 INFO L93 Difference]: Finished difference Result 2721 states and 5303 transitions. [2019-10-07 03:40:35,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:40:35,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-07 03:40:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:40:35,604 INFO L225 Difference]: With dead ends: 2721 [2019-10-07 03:40:35,604 INFO L226 Difference]: Without dead ends: 1827 [2019-10-07 03:40:35,609 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 03:40:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2019-10-07 03:40:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1804. [2019-10-07 03:40:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1804 states. [2019-10-07 03:40:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 3373 transitions. [2019-10-07 03:40:35,766 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 3373 transitions. Word has length 25 [2019-10-07 03:40:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:40:35,766 INFO L462 AbstractCegarLoop]: Abstraction has 1804 states and 3373 transitions. [2019-10-07 03:40:35,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:40:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 3373 transitions. [2019-10-07 03:40:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-07 03:40:35,769 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:40:35,769 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] [2019-10-07 03:40:35,770 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:40:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:40:35,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1622530095, now seen corresponding path program 1 times [2019-10-07 03:40:35,772 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:40:35,773 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:35,773 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:35,774 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:40:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:40:35,939 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 03:40:35,940 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:35,940 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:40:35,940 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:40:35,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:40:35,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:40:35,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:40:35,942 INFO L87 Difference]: Start difference. First operand 1804 states and 3373 transitions. Second operand 6 states. [2019-10-07 03:40:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:40:44,902 INFO L93 Difference]: Finished difference Result 6908 states and 13447 transitions. [2019-10-07 03:40:44,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 03:40:44,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-10-07 03:40:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:40:44,948 INFO L225 Difference]: With dead ends: 6908 [2019-10-07 03:40:44,948 INFO L226 Difference]: Without dead ends: 5109 [2019-10-07 03:40:44,956 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:40:44,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5109 states. [2019-10-07 03:40:45,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5109 to 4860. [2019-10-07 03:40:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4860 states. [2019-10-07 03:40:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 8255 transitions. [2019-10-07 03:40:45,182 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 8255 transitions. Word has length 28 [2019-10-07 03:40:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:40:45,183 INFO L462 AbstractCegarLoop]: Abstraction has 4860 states and 8255 transitions. [2019-10-07 03:40:45,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:40:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 8255 transitions. [2019-10-07 03:40:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 03:40:45,185 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:40:45,186 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:40:45,186 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:40:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:40:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash -130444951, now seen corresponding path program 1 times [2019-10-07 03:40:45,187 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:40:45,187 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:45,187 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:45,187 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:40:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:40:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:40:45,307 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:45,307 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:40:45,308 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 03:40:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:40:45,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:40:45,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:40:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:40:45,489 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:40:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:40:45,554 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:40:45,554 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 03:40:45,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:40:45,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:40:45,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:40:45,555 INFO L87 Difference]: Start difference. First operand 4860 states and 8255 transitions. Second operand 5 states. [2019-10-07 03:40:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:40:49,429 INFO L93 Difference]: Finished difference Result 13872 states and 24652 transitions. [2019-10-07 03:40:49,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:40:49,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-07 03:40:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:40:49,475 INFO L225 Difference]: With dead ends: 13872 [2019-10-07 03:40:49,476 INFO L226 Difference]: Without dead ends: 9017 [2019-10-07 03:40:49,494 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-07 03:40:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2019-10-07 03:40:49,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 7377. [2019-10-07 03:40:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7377 states. [2019-10-07 03:40:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 11646 transitions. [2019-10-07 03:40:49,739 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 11646 transitions. Word has length 38 [2019-10-07 03:40:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:40:49,740 INFO L462 AbstractCegarLoop]: Abstraction has 7377 states and 11646 transitions. [2019-10-07 03:40:49,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:40:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 11646 transitions. [2019-10-07 03:40:49,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-07 03:40:49,744 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:40:49,744 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2019-10-07 03:40:49,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:40:49,949 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:40:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:40:49,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1199090958, now seen corresponding path program 1 times [2019-10-07 03:40:49,950 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:40:49,950 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:49,950 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:49,950 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:40:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:40:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:40:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 03:40:50,129 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:40:50,129 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:40:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:40:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:40:50,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:40:50,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:40:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:40:50,284 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:40:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 03:40:50,354 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:40:50,384 INFO L162 IcfgInterpreter]: Started Sifa with 70 locations of interest [2019-10-07 03:40:50,385 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:40:50,391 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:40:50,399 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:40:50,400 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:40:50,545 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2019-10-07 03:40:50,708 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2019-10-07 03:40:51,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2019-10-07 03:40:51,209 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2019-10-07 03:40:51,232 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2019-10-07 03:40:51,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:40:51,556 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 03:40:51,569 INFO L168 Benchmark]: Toolchain (without parser) took 118905.47 ms. Allocated memory was 138.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 92.7 MB in the beginning and 167.8 MB in the end (delta: -75.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2019-10-07 03:40:51,572 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 03:40:51,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1893.56 ms. Allocated memory was 138.9 MB in the beginning and 218.1 MB in the end (delta: 79.2 MB). Free memory was 92.5 MB in the beginning and 83.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:40:51,578 INFO L168 Benchmark]: Boogie Preprocessor took 306.38 ms. Allocated memory was 218.1 MB in the beginning and 267.9 MB in the end (delta: 49.8 MB). Free memory was 83.3 MB in the beginning and 210.9 MB in the end (delta: -127.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:40:51,580 INFO L168 Benchmark]: RCFGBuilder took 92689.32 ms. Allocated memory was 267.9 MB in the beginning and 1.1 GB in the end (delta: 870.8 MB). Free memory was 210.9 MB in the beginning and 365.7 MB in the end (delta: -154.8 MB). Peak memory consumption was 940.3 MB. Max. memory is 7.1 GB. [2019-10-07 03:40:51,585 INFO L168 Benchmark]: TraceAbstraction took 24008.10 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 247.5 MB). Free memory was 365.3 MB in the beginning and 167.8 MB in the end (delta: 197.6 MB). Peak memory consumption was 445.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:40:51,598 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1893.56 ms. Allocated memory was 138.9 MB in the beginning and 218.1 MB in the end (delta: 79.2 MB). Free memory was 92.5 MB in the beginning and 83.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 306.38 ms. Allocated memory was 218.1 MB in the beginning and 267.9 MB in the end (delta: 49.8 MB). Free memory was 83.3 MB in the beginning and 210.9 MB in the end (delta: -127.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 92689.32 ms. Allocated memory was 267.9 MB in the beginning and 1.1 GB in the end (delta: 870.8 MB). Free memory was 210.9 MB in the beginning and 365.7 MB in the end (delta: -154.8 MB). Peak memory consumption was 940.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24008.10 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 247.5 MB). Free memory was 365.3 MB in the beginning and 167.8 MB in the end (delta: 197.6 MB). Peak memory consumption was 445.0 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...