/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/Problem02_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:33:02,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:33:02,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:33:02,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:33:02,705 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 22:33:02,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:33:02,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:33:02,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:33:02,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:33:02,742 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:33:02,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:33:02,743 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:33:02,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:33:02,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:33:02,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:33:02,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:33:02,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:33:02,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:33:02,744 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:33:02,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:33:02,744 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:33:02,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:33:02,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:33:02,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:33:02,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:33:02,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:33:02,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:33:02,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:33:02,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:33:02,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:33:02,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:33:02,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:33:02,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:33:02,750 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 22:33:03,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:33:03,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:33:03,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:33:03,096 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:33:03,096 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:33:03,097 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2019-11-06 22:33:03,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8d5ed88/1671a69216d8441aaff96968398f8f3c/FLAGbe72b3370 [2019-11-06 22:33:03,699 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:33:03,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2019-11-06 22:33:03,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8d5ed88/1671a69216d8441aaff96968398f8f3c/FLAGbe72b3370 [2019-11-06 22:33:03,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8d5ed88/1671a69216d8441aaff96968398f8f3c [2019-11-06 22:33:03,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:33:03,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:33:03,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:33:03,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:33:03,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:33:03,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:33:03" (1/1) ... [2019-11-06 22:33:03,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efb5486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:03, skipping insertion in model container [2019-11-06 22:33:03,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:33:03" (1/1) ... [2019-11-06 22:33:04,006 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:33:04,049 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:33:04,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:33:04,564 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:33:04,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:33:04,791 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:33:04,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04 WrapperNode [2019-11-06 22:33:04,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:33:04,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:33:04,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:33:04,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:33:04,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (1/1) ... [2019-11-06 22:33:04,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (1/1) ... [2019-11-06 22:33:04,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (1/1) ... [2019-11-06 22:33:04,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (1/1) ... [2019-11-06 22:33:04,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (1/1) ... [2019-11-06 22:33:04,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (1/1) ... [2019-11-06 22:33:04,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (1/1) ... [2019-11-06 22:33:04,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:33:04,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:33:04,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:33:04,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:33:04,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:33:04,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:33:04,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:33:04,999 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:33:04,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:33:05,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:33:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:33:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:33:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:33:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:33:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:33:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:33:06,226 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:33:06,227 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:33:06,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:06 BoogieIcfgContainer [2019-11-06 22:33:06,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:33:06,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:33:06,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:33:06,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:33:06,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:33:03" (1/3) ... [2019-11-06 22:33:06,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452c6c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:06, skipping insertion in model container [2019-11-06 22:33:06,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:04" (2/3) ... [2019-11-06 22:33:06,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452c6c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:06, skipping insertion in model container [2019-11-06 22:33:06,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:06" (3/3) ... [2019-11-06 22:33:06,237 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label08.c [2019-11-06 22:33:06,250 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:33:06,259 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:33:06,270 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:33:06,307 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:33:06,308 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:33:06,309 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:33:06,310 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:33:06,310 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:33:06,310 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:33:06,310 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:33:06,311 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:33:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-11-06 22:33:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-06 22:33:06,369 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:06,371 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:06,373 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:06,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:06,380 INFO L82 PathProgramCache]: Analyzing trace with hash -218350154, now seen corresponding path program 1 times [2019-11-06 22:33:06,392 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:06,392 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430778969] [2019-11-06 22:33:06,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:06,844 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 22:33:06,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430778969] [2019-11-06 22:33:06,845 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:33:06,846 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:33:06,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822613651] [2019-11-06 22:33:06,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:33:06,854 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:33:06,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:33:06,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:33:06,871 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-11-06 22:33:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:33:07,806 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2019-11-06 22:33:07,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:33:07,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-11-06 22:33:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:33:07,838 INFO L225 Difference]: With dead ends: 618 [2019-11-06 22:33:07,838 INFO L226 Difference]: Without dead ends: 320 [2019-11-06 22:33:07,850 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 22:33:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-11-06 22:33:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-11-06 22:33:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-06 22:33:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 465 transitions. [2019-11-06 22:33:07,941 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 465 transitions. Word has length 128 [2019-11-06 22:33:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:33:07,942 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 465 transitions. [2019-11-06 22:33:07,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:33:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 465 transitions. [2019-11-06 22:33:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-06 22:33:07,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:07,947 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:07,947 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:07,948 INFO L82 PathProgramCache]: Analyzing trace with hash 206670545, now seen corresponding path program 1 times [2019-11-06 22:33:07,948 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:07,948 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194179991] [2019-11-06 22:33:07,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:33:08,315 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194179991] [2019-11-06 22:33:08,315 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:33:08,315 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:33:08,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949927928] [2019-11-06 22:33:08,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:33:08,318 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:33:08,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:33:08,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:33:08,318 INFO L87 Difference]: Start difference. First operand 320 states and 465 transitions. Second operand 5 states. [2019-11-06 22:33:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:33:09,035 INFO L93 Difference]: Finished difference Result 721 states and 1089 transitions. [2019-11-06 22:33:09,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:33:09,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2019-11-06 22:33:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:33:09,039 INFO L225 Difference]: With dead ends: 721 [2019-11-06 22:33:09,039 INFO L226 Difference]: Without dead ends: 320 [2019-11-06 22:33:09,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:33:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-11-06 22:33:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-11-06 22:33:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-06 22:33:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 461 transitions. [2019-11-06 22:33:09,060 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 461 transitions. Word has length 136 [2019-11-06 22:33:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:33:09,060 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 461 transitions. [2019-11-06 22:33:09,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:33:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 461 transitions. [2019-11-06 22:33:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 22:33:09,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:09,064 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:09,064 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:09,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2140526213, now seen corresponding path program 1 times [2019-11-06 22:33:09,065 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:09,065 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242762891] [2019-11-06 22:33:09,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:33:09,390 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242762891] [2019-11-06 22:33:09,391 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:33:09,391 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:33:09,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621998835] [2019-11-06 22:33:09,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:33:09,392 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:33:09,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:33:09,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:33:09,393 INFO L87 Difference]: Start difference. First operand 320 states and 461 transitions. Second operand 5 states. [2019-11-06 22:33:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:33:10,105 INFO L93 Difference]: Finished difference Result 717 states and 1075 transitions. [2019-11-06 22:33:10,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:33:10,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2019-11-06 22:33:10,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:33:10,112 INFO L225 Difference]: With dead ends: 717 [2019-11-06 22:33:10,112 INFO L226 Difference]: Without dead ends: 320 [2019-11-06 22:33:10,113 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:33:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-11-06 22:33:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-11-06 22:33:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-06 22:33:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 455 transitions. [2019-11-06 22:33:10,130 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 455 transitions. Word has length 142 [2019-11-06 22:33:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:33:10,130 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 455 transitions. [2019-11-06 22:33:10,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:33:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 455 transitions. [2019-11-06 22:33:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 22:33:10,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:10,133 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:10,133 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:10,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:10,134 INFO L82 PathProgramCache]: Analyzing trace with hash 507332814, now seen corresponding path program 1 times [2019-11-06 22:33:10,134 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:10,134 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971371801] [2019-11-06 22:33:10,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:33:10,216 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971371801] [2019-11-06 22:33:10,216 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:33:10,216 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:33:10,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786676815] [2019-11-06 22:33:10,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:33:10,217 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:33:10,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:33:10,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:33:10,218 INFO L87 Difference]: Start difference. First operand 320 states and 455 transitions. Second operand 6 states. [2019-11-06 22:33:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:33:10,984 INFO L93 Difference]: Finished difference Result 951 states and 1383 transitions. [2019-11-06 22:33:10,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:33:10,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2019-11-06 22:33:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:33:10,989 INFO L225 Difference]: With dead ends: 951 [2019-11-06 22:33:10,990 INFO L226 Difference]: Without dead ends: 637 [2019-11-06 22:33:10,991 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:33:10,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-11-06 22:33:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 626. [2019-11-06 22:33:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-06 22:33:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 871 transitions. [2019-11-06 22:33:11,020 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 871 transitions. Word has length 150 [2019-11-06 22:33:11,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:33:11,021 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 871 transitions. [2019-11-06 22:33:11,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:33:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 871 transitions. [2019-11-06 22:33:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-06 22:33:11,024 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:11,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:11,025 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:11,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:11,025 INFO L82 PathProgramCache]: Analyzing trace with hash 842155530, now seen corresponding path program 1 times [2019-11-06 22:33:11,026 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:11,026 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420691963] [2019-11-06 22:33:11,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:33:11,277 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420691963] [2019-11-06 22:33:11,277 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:33:11,277 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:33:11,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645802264] [2019-11-06 22:33:11,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:33:11,278 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:33:11,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:33:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:33:11,279 INFO L87 Difference]: Start difference. First operand 626 states and 871 transitions. Second operand 5 states. [2019-11-06 22:33:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:33:11,879 INFO L93 Difference]: Finished difference Result 1330 states and 1903 transitions. [2019-11-06 22:33:11,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:33:11,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2019-11-06 22:33:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:33:11,883 INFO L225 Difference]: With dead ends: 1330 [2019-11-06 22:33:11,884 INFO L226 Difference]: Without dead ends: 626 [2019-11-06 22:33:11,885 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:33:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-11-06 22:33:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-11-06 22:33:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-06 22:33:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 859 transitions. [2019-11-06 22:33:11,906 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 859 transitions. Word has length 152 [2019-11-06 22:33:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:33:11,907 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 859 transitions. [2019-11-06 22:33:11,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:33:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 859 transitions. [2019-11-06 22:33:11,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-06 22:33:11,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:11,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:11,911 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:11,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:11,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1322550086, now seen corresponding path program 1 times [2019-11-06 22:33:11,912 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:11,912 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54582250] [2019-11-06 22:33:11,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:33:12,099 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54582250] [2019-11-06 22:33:12,100 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:33:12,100 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:33:12,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854189841] [2019-11-06 22:33:12,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:33:12,101 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:33:12,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:33:12,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:33:12,102 INFO L87 Difference]: Start difference. First operand 626 states and 859 transitions. Second operand 5 states. [2019-11-06 22:33:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:33:12,717 INFO L93 Difference]: Finished difference Result 1332 states and 1878 transitions. [2019-11-06 22:33:12,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:33:12,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2019-11-06 22:33:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:33:12,721 INFO L225 Difference]: With dead ends: 1332 [2019-11-06 22:33:12,721 INFO L226 Difference]: Without dead ends: 626 [2019-11-06 22:33:12,723 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:33:12,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-11-06 22:33:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-11-06 22:33:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-06 22:33:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 843 transitions. [2019-11-06 22:33:12,747 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 843 transitions. Word has length 154 [2019-11-06 22:33:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:33:12,748 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 843 transitions. [2019-11-06 22:33:12,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:33:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 843 transitions. [2019-11-06 22:33:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-06 22:33:12,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:12,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:12,753 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash 484490686, now seen corresponding path program 1 times [2019-11-06 22:33:12,754 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:12,754 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683543289] [2019-11-06 22:33:12,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:33:12,852 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683543289] [2019-11-06 22:33:12,852 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:33:12,852 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:33:12,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092952577] [2019-11-06 22:33:12,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:33:12,853 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:33:12,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:33:12,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:33:12,854 INFO L87 Difference]: Start difference. First operand 626 states and 843 transitions. Second operand 6 states. [2019-11-06 22:33:13,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:33:13,483 INFO L93 Difference]: Finished difference Result 1858 states and 2601 transitions. [2019-11-06 22:33:13,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:33:13,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-11-06 22:33:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:33:13,492 INFO L225 Difference]: With dead ends: 1858 [2019-11-06 22:33:13,493 INFO L226 Difference]: Without dead ends: 1238 [2019-11-06 22:33:13,495 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:33:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2019-11-06 22:33:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1218. [2019-11-06 22:33:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2019-11-06 22:33:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1637 transitions. [2019-11-06 22:33:13,534 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1637 transitions. Word has length 158 [2019-11-06 22:33:13,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:33:13,534 INFO L462 AbstractCegarLoop]: Abstraction has 1218 states and 1637 transitions. [2019-11-06 22:33:13,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:33:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1637 transitions. [2019-11-06 22:33:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-06 22:33:13,539 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:13,539 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:13,540 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:13,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1847232649, now seen corresponding path program 1 times [2019-11-06 22:33:13,540 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:13,541 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353536971] [2019-11-06 22:33:13,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:33:13,737 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353536971] [2019-11-06 22:33:13,737 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353591628] [2019-11-06 22:33:13,738 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 22:33:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:13,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:33:13,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:33:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:33:13,946 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:33:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:33:14,064 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:33:14,065 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-06 22:33:14,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021063875] [2019-11-06 22:33:14,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:33:14,066 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:33:14,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:33:14,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:33:14,067 INFO L87 Difference]: Start difference. First operand 1218 states and 1637 transitions. Second operand 3 states. [2019-11-06 22:33:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:33:14,608 INFO L93 Difference]: Finished difference Result 2869 states and 3879 transitions. [2019-11-06 22:33:14,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:33:14,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-11-06 22:33:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:33:14,618 INFO L225 Difference]: With dead ends: 2869 [2019-11-06 22:33:14,618 INFO L226 Difference]: Without dead ends: 1657 [2019-11-06 22:33:14,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:33:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2019-11-06 22:33:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1654. [2019-11-06 22:33:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2019-11-06 22:33:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2171 transitions. [2019-11-06 22:33:14,665 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2171 transitions. Word has length 163 [2019-11-06 22:33:14,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:33:14,665 INFO L462 AbstractCegarLoop]: Abstraction has 1654 states and 2171 transitions. [2019-11-06 22:33:14,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:33:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2171 transitions. [2019-11-06 22:33:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-11-06 22:33:14,673 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:33:14,673 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:33:14,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:33:14,881 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:33:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:33:14,882 INFO L82 PathProgramCache]: Analyzing trace with hash 205637892, now seen corresponding path program 1 times [2019-11-06 22:33:14,882 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:33:14,883 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971914970] [2019-11-06 22:33:14,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:33:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 123 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:33:15,173 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971914970] [2019-11-06 22:33:15,173 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609975723] [2019-11-06 22:33:15,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:33:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:33:15,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:33:15,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:33:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:33:15,517 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:33:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:33:15,765 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [363843088] [2019-11-06 22:33:15,774 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 241 [2019-11-06 22:33:15,835 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:33:15,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)