/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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:05:47,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:05:47,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:05:47,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:05:47,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:05:47,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:05:47,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:05:47,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:05:47,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:05:47,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:05:47,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:05:47,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:05:47,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:05:47,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:05:47,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:05:47,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:05:47,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:05:47,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:05:47,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:05:47,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:05:47,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:05:47,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:05:47,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:05:47,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:05:47,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:05:47,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:05:47,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:05:47,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:05:47,379 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 01:05:47,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:05:47,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:05:47,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:05:47,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:05:47,410 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:05:47,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:05:47,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:05:47,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:05:47,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:05:47,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:05:47,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:05:47,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:05:47,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:05:47,413 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:05:47,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:05:47,414 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:05:47,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:05:47,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:05:47,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:05:47,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:05:47,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:05:47,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:05:47,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:05:47,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:05:47,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:05:47,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:05:47,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:05:47,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:05:47,416 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 [2019-11-07 01:05:47,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:05:47,718 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:05:47,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:05:47,722 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:05:47,723 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:05:47,724 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-07 01:05:47,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/295f1d86d/26ac4ac7711a43f0841726393443690f/FLAG8ee5aa9b3 [2019-11-07 01:05:48,515 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:05:48,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-07 01:05:48,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/295f1d86d/26ac4ac7711a43f0841726393443690f/FLAG8ee5aa9b3 [2019-11-07 01:05:48,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/295f1d86d/26ac4ac7711a43f0841726393443690f [2019-11-07 01:05:48,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:05:48,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:05:48,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:05:48,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:05:48,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:05:48,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:48" (1/1) ... [2019-11-07 01:05:48,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fdd39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48, skipping insertion in model container [2019-11-07 01:05:48,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:48" (1/1) ... [2019-11-07 01:05:48,641 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:05:48,794 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:05:49,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:05:49,866 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:05:50,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:05:50,255 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:05:50,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50 WrapperNode [2019-11-07 01:05:50,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:05:50,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:05:50,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:05:50,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:05:50,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (1/1) ... [2019-11-07 01:05:50,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (1/1) ... [2019-11-07 01:05:50,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (1/1) ... [2019-11-07 01:05:50,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (1/1) ... [2019-11-07 01:05:50,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (1/1) ... [2019-11-07 01:05:50,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (1/1) ... [2019-11-07 01:05:50,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (1/1) ... [2019-11-07 01:05:50,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:05:50,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:05:50,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:05:50,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:05:50,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:05:50,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:05:50,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:05:50,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:05:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:05:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 01:05:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 01:05:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-07 01:05:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 01:05:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-07 01:05:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-07 01:05:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-07 01:05:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-07 01:05:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-07 01:05:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-07 01:05:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-07 01:05:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:05:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:05:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:05:53,900 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:05:53,901 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 01:05:53,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:53 BoogieIcfgContainer [2019-11-07 01:05:53,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:05:53,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:05:53,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:05:53,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:05:53,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:05:48" (1/3) ... [2019-11-07 01:05:53,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3c3ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:53, skipping insertion in model container [2019-11-07 01:05:53,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:50" (2/3) ... [2019-11-07 01:05:53,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3c3ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:53, skipping insertion in model container [2019-11-07 01:05:53,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:53" (3/3) ... [2019-11-07 01:05:53,911 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-07 01:05:53,922 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:05:53,932 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-07 01:05:53,943 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-07 01:05:53,982 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:05:53,982 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:05:53,983 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:05:53,983 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:05:53,983 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:05:53,983 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:05:53,983 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:05:53,983 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:05:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2019-11-07 01:05:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 01:05:54,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:54,046 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] [2019-11-07 01:05:54,048 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:54,055 INFO L82 PathProgramCache]: Analyzing trace with hash 543541410, now seen corresponding path program 1 times [2019-11-07 01:05:54,065 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:54,065 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392097158] [2019-11-07 01:05:54,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:54,736 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 01:05:54,737 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392097158] [2019-11-07 01:05:54,738 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:54,738 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 01:05:54,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289329941] [2019-11-07 01:05:54,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 01:05:54,748 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:54,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:05:54,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:05:54,768 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 5 states. [2019-11-07 01:05:56,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:56,942 INFO L93 Difference]: Finished difference Result 2522 states and 4334 transitions. [2019-11-07 01:05:56,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:05:56,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2019-11-07 01:05:56,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:56,970 INFO L225 Difference]: With dead ends: 2522 [2019-11-07 01:05:56,971 INFO L226 Difference]: Without dead ends: 1594 [2019-11-07 01:05:56,979 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:05:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2019-11-07 01:05:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1588. [2019-11-07 01:05:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2019-11-07 01:05:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2070 transitions. [2019-11-07 01:05:57,133 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2070 transitions. Word has length 56 [2019-11-07 01:05:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:57,134 INFO L462 AbstractCegarLoop]: Abstraction has 1588 states and 2070 transitions. [2019-11-07 01:05:57,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 01:05:57,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2070 transitions. [2019-11-07 01:05:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 01:05:57,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:57,139 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] [2019-11-07 01:05:57,139 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash 653011577, now seen corresponding path program 1 times [2019-11-07 01:05:57,140 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:57,140 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370765648] [2019-11-07 01:05:57,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:57,384 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 01:05:57,384 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370765648] [2019-11-07 01:05:57,385 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:57,385 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:05:57,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377235955] [2019-11-07 01:05:57,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:05:57,388 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:57,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:05:57,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:05:57,389 INFO L87 Difference]: Start difference. First operand 1588 states and 2070 transitions. Second operand 6 states. [2019-11-07 01:05:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:05:58,817 INFO L93 Difference]: Finished difference Result 3593 states and 4735 transitions. [2019-11-07 01:05:58,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:05:58,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-11-07 01:05:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:05:58,831 INFO L225 Difference]: With dead ends: 3593 [2019-11-07 01:05:58,831 INFO L226 Difference]: Without dead ends: 2603 [2019-11-07 01:05:58,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:05:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2019-11-07 01:05:58,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2580. [2019-11-07 01:05:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2580 states. [2019-11-07 01:05:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3414 transitions. [2019-11-07 01:05:58,949 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3414 transitions. Word has length 57 [2019-11-07 01:05:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:05:58,949 INFO L462 AbstractCegarLoop]: Abstraction has 2580 states and 3414 transitions. [2019-11-07 01:05:58,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:05:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3414 transitions. [2019-11-07 01:05:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 01:05:58,952 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:05:58,952 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] [2019-11-07 01:05:58,953 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:05:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:05:58,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2124615921, now seen corresponding path program 1 times [2019-11-07 01:05:58,954 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:05:58,954 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81816380] [2019-11-07 01:05:58,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:05:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:05:59,174 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 01:05:59,175 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81816380] [2019-11-07 01:05:59,175 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:05:59,175 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:05:59,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038947521] [2019-11-07 01:05:59,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:05:59,177 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:05:59,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:05:59,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:05:59,177 INFO L87 Difference]: Start difference. First operand 2580 states and 3414 transitions. Second operand 6 states. [2019-11-07 01:06:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:00,475 INFO L93 Difference]: Finished difference Result 6102 states and 8181 transitions. [2019-11-07 01:06:00,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:00,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-11-07 01:06:00,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:00,504 INFO L225 Difference]: With dead ends: 6102 [2019-11-07 01:06:00,504 INFO L226 Difference]: Without dead ends: 4454 [2019-11-07 01:06:00,510 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:06:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2019-11-07 01:06:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4438. [2019-11-07 01:06:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4438 states. [2019-11-07 01:06:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 5921 transitions. [2019-11-07 01:06:00,826 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 5921 transitions. Word has length 57 [2019-11-07 01:06:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:00,827 INFO L462 AbstractCegarLoop]: Abstraction has 4438 states and 5921 transitions. [2019-11-07 01:06:00,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:06:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 5921 transitions. [2019-11-07 01:06:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:06:00,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:00,831 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] [2019-11-07 01:06:00,832 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:00,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:00,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1225390693, now seen corresponding path program 1 times [2019-11-07 01:06:00,832 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:00,832 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138168495] [2019-11-07 01:06:00,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:01,070 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 01:06:01,071 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138168495] [2019-11-07 01:06:01,071 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:01,071 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 01:06:01,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749910448] [2019-11-07 01:06:01,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 01:06:01,072 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:01,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 01:06:01,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:06:01,073 INFO L87 Difference]: Start difference. First operand 4438 states and 5921 transitions. Second operand 9 states. [2019-11-07 01:06:05,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:05,184 INFO L93 Difference]: Finished difference Result 8492 states and 12034 transitions. [2019-11-07 01:06:05,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-07 01:06:05,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2019-11-07 01:06:05,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:05,241 INFO L225 Difference]: With dead ends: 8492 [2019-11-07 01:06:05,242 INFO L226 Difference]: Without dead ends: 8486 [2019-11-07 01:06:05,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2019-11-07 01:06:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8486 states. [2019-11-07 01:06:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8486 to 4438. [2019-11-07 01:06:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4438 states. [2019-11-07 01:06:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 5920 transitions. [2019-11-07 01:06:05,851 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 5920 transitions. Word has length 59 [2019-11-07 01:06:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:05,853 INFO L462 AbstractCegarLoop]: Abstraction has 4438 states and 5920 transitions. [2019-11-07 01:06:05,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 01:06:05,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 5920 transitions. [2019-11-07 01:06:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:06:05,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:05,860 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] [2019-11-07 01:06:05,861 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:05,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2072576560, now seen corresponding path program 1 times [2019-11-07 01:06:05,862 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:05,863 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116441618] [2019-11-07 01:06:05,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:06,223 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 01:06:06,223 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116441618] [2019-11-07 01:06:06,224 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:06,224 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 01:06:06,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578669286] [2019-11-07 01:06:06,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 01:06:06,226 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:06,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 01:06:06,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:06:06,229 INFO L87 Difference]: Start difference. First operand 4438 states and 5920 transitions. Second operand 9 states. [2019-11-07 01:06:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:09,944 INFO L93 Difference]: Finished difference Result 12604 states and 17782 transitions. [2019-11-07 01:06:09,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 01:06:09,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2019-11-07 01:06:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:10,017 INFO L225 Difference]: With dead ends: 12604 [2019-11-07 01:06:10,017 INFO L226 Difference]: Without dead ends: 11461 [2019-11-07 01:06:10,024 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2019-11-07 01:06:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11461 states. [2019-11-07 01:06:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11461 to 4438. [2019-11-07 01:06:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4438 states. [2019-11-07 01:06:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 5919 transitions. [2019-11-07 01:06:10,496 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 5919 transitions. Word has length 59 [2019-11-07 01:06:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:10,497 INFO L462 AbstractCegarLoop]: Abstraction has 4438 states and 5919 transitions. [2019-11-07 01:06:10,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 01:06:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 5919 transitions. [2019-11-07 01:06:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:06:10,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:10,501 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] [2019-11-07 01:06:10,501 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1462179803, now seen corresponding path program 1 times [2019-11-07 01:06:10,502 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:10,502 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109464506] [2019-11-07 01:06:10,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:10,758 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 01:06:10,758 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109464506] [2019-11-07 01:06:10,759 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:10,759 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 01:06:10,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532906238] [2019-11-07 01:06:10,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 01:06:10,760 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:10,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 01:06:10,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:06:10,761 INFO L87 Difference]: Start difference. First operand 4438 states and 5919 transitions. Second operand 8 states. [2019-11-07 01:06:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:13,750 INFO L93 Difference]: Finished difference Result 9646 states and 13819 transitions. [2019-11-07 01:06:13,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 01:06:13,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2019-11-07 01:06:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:13,769 INFO L225 Difference]: With dead ends: 9646 [2019-11-07 01:06:13,769 INFO L226 Difference]: Without dead ends: 8253 [2019-11-07 01:06:13,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-11-07 01:06:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8253 states. [2019-11-07 01:06:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8253 to 4438. [2019-11-07 01:06:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4438 states. [2019-11-07 01:06:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 5918 transitions. [2019-11-07 01:06:14,106 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 5918 transitions. Word has length 59 [2019-11-07 01:06:14,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:14,107 INFO L462 AbstractCegarLoop]: Abstraction has 4438 states and 5918 transitions. [2019-11-07 01:06:14,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 01:06:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 5918 transitions. [2019-11-07 01:06:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 01:06:14,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:14,117 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] [2019-11-07 01:06:14,117 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:14,118 INFO L82 PathProgramCache]: Analyzing trace with hash 895594476, now seen corresponding path program 1 times [2019-11-07 01:06:14,118 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:14,126 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360958987] [2019-11-07 01:06:14,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:14,240 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 01:06:14,240 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360958987] [2019-11-07 01:06:14,240 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:14,240 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:14,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612162983] [2019-11-07 01:06:14,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:14,242 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:14,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:14,243 INFO L87 Difference]: Start difference. First operand 4438 states and 5918 transitions. Second operand 3 states. [2019-11-07 01:06:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:14,988 INFO L93 Difference]: Finished difference Result 8143 states and 11088 transitions. [2019-11-07 01:06:14,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:06:14,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-11-07 01:06:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:15,007 INFO L225 Difference]: With dead ends: 8143 [2019-11-07 01:06:15,008 INFO L226 Difference]: Without dead ends: 5548 [2019-11-07 01:06:15,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:06:15,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2019-11-07 01:06:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5542. [2019-11-07 01:06:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5542 states. [2019-11-07 01:06:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 7349 transitions. [2019-11-07 01:06:15,384 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 7349 transitions. Word has length 60 [2019-11-07 01:06:15,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:15,385 INFO L462 AbstractCegarLoop]: Abstraction has 5542 states and 7349 transitions. [2019-11-07 01:06:15,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:06:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 7349 transitions. [2019-11-07 01:06:15,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 01:06:15,390 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:15,390 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] [2019-11-07 01:06:15,390 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:15,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:15,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1516341452, now seen corresponding path program 1 times [2019-11-07 01:06:15,391 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:15,391 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417550367] [2019-11-07 01:06:15,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:15,492 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 01:06:15,492 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417550367] [2019-11-07 01:06:15,493 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:15,493 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:15,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913653447] [2019-11-07 01:06:15,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:15,494 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:15,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:15,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:15,494 INFO L87 Difference]: Start difference. First operand 5542 states and 7349 transitions. Second operand 3 states. [2019-11-07 01:06:16,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:16,325 INFO L93 Difference]: Finished difference Result 9044 states and 12648 transitions. [2019-11-07 01:06:16,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:06:16,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-11-07 01:06:16,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:16,341 INFO L225 Difference]: With dead ends: 9044 [2019-11-07 01:06:16,341 INFO L226 Difference]: Without dead ends: 6694 [2019-11-07 01:06:16,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:06:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2019-11-07 01:06:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 6090. [2019-11-07 01:06:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6090 states. [2019-11-07 01:06:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 8232 transitions. [2019-11-07 01:06:16,894 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 8232 transitions. Word has length 60 [2019-11-07 01:06:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:16,894 INFO L462 AbstractCegarLoop]: Abstraction has 6090 states and 8232 transitions. [2019-11-07 01:06:16,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:06:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 8232 transitions. [2019-11-07 01:06:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 01:06:16,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:16,899 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] [2019-11-07 01:06:16,899 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:16,900 INFO L82 PathProgramCache]: Analyzing trace with hash -514589220, now seen corresponding path program 1 times [2019-11-07 01:06:16,900 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:16,900 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068954721] [2019-11-07 01:06:16,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:17,007 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 01:06:17,007 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068954721] [2019-11-07 01:06:17,008 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:17,008 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:17,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98721657] [2019-11-07 01:06:17,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:17,009 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:17,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:17,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:17,010 INFO L87 Difference]: Start difference. First operand 6090 states and 8232 transitions. Second operand 3 states. [2019-11-07 01:06:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:18,029 INFO L93 Difference]: Finished difference Result 11404 states and 16131 transitions. [2019-11-07 01:06:18,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:06:18,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-11-07 01:06:18,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:18,050 INFO L225 Difference]: With dead ends: 11404 [2019-11-07 01:06:18,050 INFO L226 Difference]: Without dead ends: 8067 [2019-11-07 01:06:18,057 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:06:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2019-11-07 01:06:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 7151. [2019-11-07 01:06:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7151 states. [2019-11-07 01:06:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 9773 transitions. [2019-11-07 01:06:18,668 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 9773 transitions. Word has length 60 [2019-11-07 01:06:18,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:18,669 INFO L462 AbstractCegarLoop]: Abstraction has 7151 states and 9773 transitions. [2019-11-07 01:06:18,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:06:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 9773 transitions. [2019-11-07 01:06:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-07 01:06:18,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:18,674 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] [2019-11-07 01:06:18,674 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:18,675 INFO L82 PathProgramCache]: Analyzing trace with hash -293371609, now seen corresponding path program 1 times [2019-11-07 01:06:18,675 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:18,675 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532654049] [2019-11-07 01:06:18,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:18,753 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 01:06:18,753 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532654049] [2019-11-07 01:06:18,753 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:18,753 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:18,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744632287] [2019-11-07 01:06:18,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:18,754 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:18,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:18,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:18,755 INFO L87 Difference]: Start difference. First operand 7151 states and 9773 transitions. Second operand 3 states.