/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:57:53,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:57:53,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:57:53,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:57:53,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:57:53,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:57:53,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:57:53,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:57:53,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:57:53,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:57:53,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:57:53,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:57:53,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:57:53,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:57:53,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:57:53,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:57:53,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:57:53,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:57:53,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:57:53,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:57:53,683 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 [2019-11-06 22:57:53,697 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:57:53,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:57:53,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:57:53,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:57:53,699 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:57:53,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:57:53,699 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:57:53,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:57:53,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:57:53,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:57:53,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:57:53,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:57:53,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:57:53,701 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:57:53,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:57:53,701 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:57:53,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:57:53,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:57:53,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:57:53,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:57:53,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:57:53,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:57:53,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:57:53,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:57:53,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:57:53,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:57:53,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:57:53,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:57:53,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:57:54,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:57:54,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:57:54,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:57:54,040 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:57:54,040 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:57:54,041 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41.c [2019-11-06 22:57:54,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200e0ee90/601dadc407da43a78abac4cfe2307ced/FLAG9568b204a [2019-11-06 22:57:54,824 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:57:54,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label41.c [2019-11-06 22:57:54,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200e0ee90/601dadc407da43a78abac4cfe2307ced/FLAG9568b204a [2019-11-06 22:57:54,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200e0ee90/601dadc407da43a78abac4cfe2307ced [2019-11-06 22:57:54,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:57:54,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:57:54,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:57:54,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:57:54,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:57:54,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:54" (1/1) ... [2019-11-06 22:57:54,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630fa84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:54, skipping insertion in model container [2019-11-06 22:57:54,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:54" (1/1) ... [2019-11-06 22:57:54,992 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:57:55,110 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:57:56,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:57:56,439 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:57:56,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:57:56,911 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:57:56,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56 WrapperNode [2019-11-06 22:57:56,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:57:56,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:57:56,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:57:56,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:57:56,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (1/1) ... [2019-11-06 22:57:56,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (1/1) ... [2019-11-06 22:57:56,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (1/1) ... [2019-11-06 22:57:56,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (1/1) ... [2019-11-06 22:57:57,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (1/1) ... [2019-11-06 22:57:57,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (1/1) ... [2019-11-06 22:57:57,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (1/1) ... [2019-11-06 22:57:57,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:57:57,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:57:57,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:57:57,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:57:57,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (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 [2019-11-06 22:57:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:57:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:57:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:57:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:57:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:57:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:57:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:57:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:57:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:57:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:57:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:57:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:57:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:57:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:57:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:58:01,408 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:58:01,408 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:58:01,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:01 BoogieIcfgContainer [2019-11-06 22:58:01,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:58:01,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:58:01,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:58:01,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:58:01,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:54" (1/3) ... [2019-11-06 22:58:01,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aeb838a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:01, skipping insertion in model container [2019-11-06 22:58:01,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:56" (2/3) ... [2019-11-06 22:58:01,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aeb838a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:01, skipping insertion in model container [2019-11-06 22:58:01,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:01" (3/3) ... [2019-11-06 22:58:01,424 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label41.c [2019-11-06 22:58:01,438 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:58:01,449 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:58:01,462 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:58:01,504 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:58:01,505 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:58:01,506 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:58:01,506 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:58:01,506 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:58:01,506 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:58:01,506 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:58:01,506 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:58:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 22:58:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 22:58:01,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:01,559 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] [2019-11-06 22:58:01,561 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1857316166, now seen corresponding path program 1 times [2019-11-06 22:58:01,577 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:01,577 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099424846] [2019-11-06 22:58:01,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:02,012 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099424846] [2019-11-06 22:58:02,013 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:02,013 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:58:02,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020931419] [2019-11-06 22:58:02,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:58:02,022 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:02,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:58:02,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:58:02,040 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-11-06 22:58:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:06,900 INFO L93 Difference]: Finished difference Result 2248 states and 4319 transitions. [2019-11-06 22:58:06,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:58:06,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-11-06 22:58:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:06,942 INFO L225 Difference]: With dead ends: 2248 [2019-11-06 22:58:06,942 INFO L226 Difference]: Without dead ends: 1412 [2019-11-06 22:58:06,956 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 [2019-11-06 22:58:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-11-06 22:58:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-11-06 22:58:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-11-06 22:58:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2630 transitions. [2019-11-06 22:58:07,119 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2630 transitions. Word has length 71 [2019-11-06 22:58:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:07,120 INFO L462 AbstractCegarLoop]: Abstraction has 1412 states and 2630 transitions. [2019-11-06 22:58:07,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:58:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2630 transitions. [2019-11-06 22:58:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-06 22:58:07,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:07,133 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:58:07,134 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:07,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1967300729, now seen corresponding path program 1 times [2019-11-06 22:58:07,135 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:07,135 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411426954] [2019-11-06 22:58:07,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:07,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411426954] [2019-11-06 22:58:07,431 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:07,431 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:58:07,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939484960] [2019-11-06 22:58:07,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:58:07,434 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:07,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:58:07,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:58:07,435 INFO L87 Difference]: Start difference. First operand 1412 states and 2630 transitions. Second operand 6 states. [2019-11-06 22:58:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:13,079 INFO L93 Difference]: Finished difference Result 4294 states and 8031 transitions. [2019-11-06 22:58:13,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:58:13,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-11-06 22:58:13,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:13,101 INFO L225 Difference]: With dead ends: 4294 [2019-11-06 22:58:13,102 INFO L226 Difference]: Without dead ends: 2888 [2019-11-06 22:58:13,107 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:58:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2019-11-06 22:58:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2864. [2019-11-06 22:58:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-11-06 22:58:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4749 transitions. [2019-11-06 22:58:13,201 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4749 transitions. Word has length 144 [2019-11-06 22:58:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:13,201 INFO L462 AbstractCegarLoop]: Abstraction has 2864 states and 4749 transitions. [2019-11-06 22:58:13,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:58:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4749 transitions. [2019-11-06 22:58:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:58:13,204 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:13,205 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:58:13,205 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:13,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1730741066, now seen corresponding path program 1 times [2019-11-06 22:58:13,206 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:13,206 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129603181] [2019-11-06 22:58:13,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:13,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129603181] [2019-11-06 22:58:13,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:13,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:58:13,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764200914] [2019-11-06 22:58:13,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:58:13,337 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:13,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:58:13,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:58:13,338 INFO L87 Difference]: Start difference. First operand 2864 states and 4749 transitions. Second operand 5 states. [2019-11-06 22:58:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:19,122 INFO L93 Difference]: Finished difference Result 8756 states and 14708 transitions. [2019-11-06 22:58:19,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:58:19,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-11-06 22:58:19,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:19,155 INFO L225 Difference]: With dead ends: 8756 [2019-11-06 22:58:19,155 INFO L226 Difference]: Without dead ends: 5898 [2019-11-06 22:58:19,162 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:58:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2019-11-06 22:58:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 5815. [2019-11-06 22:58:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2019-11-06 22:58:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8479 transitions. [2019-11-06 22:58:19,319 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8479 transitions. Word has length 147 [2019-11-06 22:58:19,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:19,320 INFO L462 AbstractCegarLoop]: Abstraction has 5815 states and 8479 transitions. [2019-11-06 22:58:19,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:58:19,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8479 transitions. [2019-11-06 22:58:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-06 22:58:19,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:19,323 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:58:19,323 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:19,324 INFO L82 PathProgramCache]: Analyzing trace with hash -864135450, now seen corresponding path program 1 times [2019-11-06 22:58:19,324 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:19,324 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514499897] [2019-11-06 22:58:19,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:19,461 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514499897] [2019-11-06 22:58:19,462 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:19,462 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:58:19,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927086375] [2019-11-06 22:58:19,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:58:19,463 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:19,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:19,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:19,464 INFO L87 Difference]: Start difference. First operand 5815 states and 8479 transitions. Second operand 4 states. [2019-11-06 22:58:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:24,916 INFO L93 Difference]: Finished difference Result 14506 states and 21040 transitions. [2019-11-06 22:58:24,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:58:24,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-11-06 22:58:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:24,960 INFO L225 Difference]: With dead ends: 14506 [2019-11-06 22:58:24,960 INFO L226 Difference]: Without dead ends: 8697 [2019-11-06 22:58:24,975 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8697 states. [2019-11-06 22:58:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8697 to 8687. [2019-11-06 22:58:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8687 states. [2019-11-06 22:58:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 11857 transitions. [2019-11-06 22:58:25,268 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 11857 transitions. Word has length 177 [2019-11-06 22:58:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:25,270 INFO L462 AbstractCegarLoop]: Abstraction has 8687 states and 11857 transitions. [2019-11-06 22:58:25,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:58:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 11857 transitions. [2019-11-06 22:58:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-11-06 22:58:25,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:25,276 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:25,277 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:25,277 INFO L82 PathProgramCache]: Analyzing trace with hash 858375375, now seen corresponding path program 1 times [2019-11-06 22:58:25,277 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:25,278 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667148671] [2019-11-06 22:58:25,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 128 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:58:25,474 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667148671] [2019-11-06 22:58:25,475 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879383788] [2019-11-06 22:58:25,475 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 [2019-11-06 22:58:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:25,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 22:58:25,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:58:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-06 22:58:25,725 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:58:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 128 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:58:25,843 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:58:25,844 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-11-06 22:58:25,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104227484] [2019-11-06 22:58:25,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:58:25,845 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:25,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:58:25,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:58:25,846 INFO L87 Difference]: Start difference. First operand 8687 states and 11857 transitions. Second operand 5 states.