/usr/bin/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/Problem02_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:40:02,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:40:02,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:40:02,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 01:40:02,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:40:02,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:40:02,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:40:02,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:40:02,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:40:02,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:40:02,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:40:02,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:40:02,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:40:02,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:40:02,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:40:02,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:40:02,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:40:02,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:40:02,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:40:02,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:40:02,392 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 [2019-11-07 01:40:02,428 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:40:02,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:40:02,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:40:02,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:40:02,435 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:40:02,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:40:02,436 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:40:02,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:40:02,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:40:02,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:40:02,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:40:02,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:40:02,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:40:02,439 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:40:02,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:40:02,440 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:40:02,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:40:02,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:40:02,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:40:02,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:40:02,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:40:02,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:40:02,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:40:02,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:40:02,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:40:02,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:40:02,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:40:02,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:40:02,445 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 [2019-11-07 01:40:02,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:40:02,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:40:02,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:40:02,817 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:40:02,818 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:40:02,819 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2019-11-07 01:40:02,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66587212a/4641febe9b664f38aba65182fa420c98/FLAG751ab94d4 [2019-11-07 01:40:03,446 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:40:03,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2019-11-07 01:40:03,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66587212a/4641febe9b664f38aba65182fa420c98/FLAG751ab94d4 [2019-11-07 01:40:03,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66587212a/4641febe9b664f38aba65182fa420c98 [2019-11-07 01:40:03,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:40:03,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:40:03,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:40:03,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:40:03,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:40:03,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:03" (1/1) ... [2019-11-07 01:40:03,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@adc654d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:03, skipping insertion in model container [2019-11-07 01:40:03,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:03" (1/1) ... [2019-11-07 01:40:03,792 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:40:03,842 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:40:04,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:40:04,463 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:40:04,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:40:04,611 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:40:04,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04 WrapperNode [2019-11-07 01:40:04,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:40:04,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:40:04,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:40:04,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:40:04,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (1/1) ... [2019-11-07 01:40:04,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (1/1) ... [2019-11-07 01:40:04,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (1/1) ... [2019-11-07 01:40:04,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (1/1) ... [2019-11-07 01:40:04,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (1/1) ... [2019-11-07 01:40:04,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (1/1) ... [2019-11-07 01:40:04,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (1/1) ... [2019-11-07 01:40:04,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:40:04,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:40:04,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:40:04,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:40:04,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (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 [2019-11-07 01:40:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:40:04,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:40:04,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:40:04,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:40:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:40:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:40:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:40:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:40:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:40:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:40:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:40:06,886 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:40:06,886 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:40:06,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:06 BoogieIcfgContainer [2019-11-07 01:40:06,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:40:06,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:40:06,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:40:06,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:40:06,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:40:03" (1/3) ... [2019-11-07 01:40:06,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7b2f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:06, skipping insertion in model container [2019-11-07 01:40:06,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:04" (2/3) ... [2019-11-07 01:40:06,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7b2f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:06, skipping insertion in model container [2019-11-07 01:40:06,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:06" (3/3) ... [2019-11-07 01:40:06,903 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2019-11-07 01:40:06,915 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:40:06,928 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:40:06,940 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:40:06,974 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:40:06,974 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:40:06,976 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:40:06,976 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:40:06,976 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:40:06,976 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:40:06,976 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:40:06,976 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:40:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-07 01:40:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-07 01:40:07,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:40:07,021 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:40:07,023 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:40:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:40:07,028 INFO L82 PathProgramCache]: Analyzing trace with hash -219368649, now seen corresponding path program 1 times [2019-11-07 01:40:07,036 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:40:07,036 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115397766] [2019-11-07 01:40:07,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:40:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:40:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:40:07,456 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115397766] [2019-11-07 01:40:07,457 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:40:07,457 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:40:07,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672667999] [2019-11-07 01:40:07,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:40:07,466 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:40:07,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:40:07,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:40:07,488 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-11-07 01:40:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:40:08,106 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-11-07 01:40:08,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:40:08,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-11-07 01:40:08,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:40:08,131 INFO L225 Difference]: With dead ends: 273 [2019-11-07 01:40:08,131 INFO L226 Difference]: Without dead ends: 175 [2019-11-07 01:40:08,138 INFO L630 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 [2019-11-07 01:40:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-11-07 01:40:08,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-11-07 01:40:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-11-07 01:40:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 312 transitions. [2019-11-07 01:40:08,248 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 312 transitions. Word has length 86 [2019-11-07 01:40:08,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:40:08,250 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 312 transitions. [2019-11-07 01:40:08,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:40:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 312 transitions. [2019-11-07 01:40:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 01:40:08,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:40:08,265 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:40:08,266 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:40:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:40:08,266 INFO L82 PathProgramCache]: Analyzing trace with hash -701903428, now seen corresponding path program 1 times [2019-11-07 01:40:08,266 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:40:08,267 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186416467] [2019-11-07 01:40:08,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:40:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:40:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:40:08,509 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186416467] [2019-11-07 01:40:08,509 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:40:08,509 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:40:08,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699877060] [2019-11-07 01:40:08,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:40:08,512 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:40:08,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:40:08,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:40:08,513 INFO L87 Difference]: Start difference. First operand 175 states and 312 transitions. Second operand 3 states. [2019-11-07 01:40:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:40:08,915 INFO L93 Difference]: Finished difference Result 513 states and 937 transitions. [2019-11-07 01:40:08,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:40:08,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-11-07 01:40:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:40:08,920 INFO L225 Difference]: With dead ends: 513 [2019-11-07 01:40:08,920 INFO L226 Difference]: Without dead ends: 343 [2019-11-07 01:40:08,922 INFO L630 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 [2019-11-07 01:40:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-11-07 01:40:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2019-11-07 01:40:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-11-07 01:40:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 580 transitions. [2019-11-07 01:40:08,956 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 580 transitions. Word has length 94 [2019-11-07 01:40:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:40:08,958 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 580 transitions. [2019-11-07 01:40:08,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:40:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 580 transitions. [2019-11-07 01:40:08,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 01:40:08,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:40:08,964 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:40:08,964 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:40:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:40:08,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1247412744, now seen corresponding path program 1 times [2019-11-07 01:40:08,965 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:40:08,966 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767644199] [2019-11-07 01:40:08,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:40:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:40:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:40:09,115 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767644199] [2019-11-07 01:40:09,115 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:40:09,115 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:40:09,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264206986] [2019-11-07 01:40:09,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:40:09,117 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:40:09,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:40:09,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:40:09,122 INFO L87 Difference]: Start difference. First operand 343 states and 580 transitions. Second operand 3 states. [2019-11-07 01:40:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:40:09,664 INFO L93 Difference]: Finished difference Result 1017 states and 1776 transitions. [2019-11-07 01:40:09,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:40:09,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-11-07 01:40:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:40:09,670 INFO L225 Difference]: With dead ends: 1017 [2019-11-07 01:40:09,670 INFO L226 Difference]: Without dead ends: 679 [2019-11-07 01:40:09,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:40:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-11-07 01:40:09,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 511. [2019-11-07 01:40:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2019-11-07 01:40:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 811 transitions. [2019-11-07 01:40:09,711 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 811 transitions. Word has length 100 [2019-11-07 01:40:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:40:09,712 INFO L462 AbstractCegarLoop]: Abstraction has 511 states and 811 transitions. [2019-11-07 01:40:09,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:40:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 811 transitions. [2019-11-07 01:40:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-07 01:40:09,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:40:09,715 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:40:09,716 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:40:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:40:09,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1843556116, now seen corresponding path program 1 times [2019-11-07 01:40:09,716 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:40:09,717 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259344119] [2019-11-07 01:40:09,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:40:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:40:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 01:40:09,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259344119] [2019-11-07 01:40:09,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472994501] [2019-11-07 01:40:09,855 INFO L94 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 [2019-11-07 01:40:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:40:09,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:40:09,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:40:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:40:10,091 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:40:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:40:10,244 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [874553927] [2019-11-07 01:40:10,302 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-11-07 01:40:10,302 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:40:10,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:40:10,317 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:40:10,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:40:10,614 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-11-07 01:40:12,037 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 88 for LOIs [2019-11-07 01:40:19,620 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-11-07 01:40:19,657 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5960 conjuctions. This might take some time... [2019-11-07 01:40:19,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-11-07 01:40:19,911 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5960 conjuctions. This might take some time... [2019-11-07 01:40:20,242 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-11-07 01:40:20,266 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5960 conjuctions. This might take some time... [2019-11-07 01:40:25,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 52 for LOIs [2019-11-07 01:40:25,633 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 01:40:26,116 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2019-11-07 01:40:26,458 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2019-11-07 01:40:27,154 WARN L191 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 99 [2019-11-07 01:40:27,719 WARN L191 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 92 [2019-11-07 01:40:28,028 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2019-11-07 01:40:28,272 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-11-07 01:40:28,535 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2019-11-07 01:40:28,856 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2019-11-07 01:40:29,242 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 81 [2019-11-07 01:40:29,585 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2019-11-07 01:40:30,030 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2019-11-07 01:40:38,446 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 01:40:38,446 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 13] total 23 [2019-11-07 01:40:38,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783729280] [2019-11-07 01:40:38,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-07 01:40:38,449 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:40:38,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-07 01:40:38,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2019-11-07 01:40:38,450 INFO L87 Difference]: Start difference. First operand 511 states and 811 transitions. Second operand 23 states. [2019-11-07 01:40:38,673 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-11-07 01:40:39,051 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 92 [2019-11-07 01:40:39,610 WARN L191 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 103 [2019-11-07 01:40:40,272 WARN L191 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 100 [2019-11-07 01:40:40,621 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-11-07 01:40:40,991 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 93