/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:48,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:48,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:48,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:48,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:48,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:48,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:48,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:48,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:48,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:48,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:48,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:48,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:48,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:48,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:48,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:48,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:48,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:48,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:48,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:48,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:48,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:48,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:48,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:48,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:48,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:48,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:48,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:48,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:48,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:48,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:48,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:48,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:48,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:48,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:48,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:48,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:48,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:48,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:48,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:48,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:48,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:22:48,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:48,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:48,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:48,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:48,615 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:48,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:48,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:48,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:48,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:48,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:48,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:48,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:48,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:48,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:48,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:48,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:48,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:48,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:48,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:48,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:48,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:48,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:48,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:48,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:48,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:48,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:48,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:48,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:48,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:48,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:22:49,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:49,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:49,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:49,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:49,160 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:49,161 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann03.c [2020-09-24 20:22:49,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96dab710d/5cbe2a5388ca42b881f7fd63afae4ef8/FLAGbe41c6bef [2020-09-24 20:22:49,751 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:49,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann03.c [2020-09-24 20:22:49,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96dab710d/5cbe2a5388ca42b881f7fd63afae4ef8/FLAGbe41c6bef [2020-09-24 20:22:50,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96dab710d/5cbe2a5388ca42b881f7fd63afae4ef8 [2020-09-24 20:22:50,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:50,129 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:50,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:50,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:50,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:50,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50, skipping insertion in model container [2020-09-24 20:22:50,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:50,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:22:50,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:50,440 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:22:50,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:50,473 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:22:50,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50 WrapperNode [2020-09-24 20:22:50,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:50,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:22:50,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:22:50,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:22:50,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:22:50,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:22:50,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:22:50,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:22:50,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 20:22:50,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:22:50,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:22:50,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-24 20:22:50,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:22:50,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:22:50,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:22:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-24 20:22:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:22:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:22:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:22:50,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:22:50,997 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:22:51,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:51 BoogieIcfgContainer [2020-09-24 20:22:51,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:22:51,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:22:51,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:22:51,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:22:51,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:50" (1/3) ... [2020-09-24 20:22:51,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c136df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:51, skipping insertion in model container [2020-09-24 20:22:51,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (2/3) ... [2020-09-24 20:22:51,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c136df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:51, skipping insertion in model container [2020-09-24 20:22:51,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:51" (3/3) ... [2020-09-24 20:22:51,012 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2020-09-24 20:22:51,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:22:51,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:22:51,073 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:22:51,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:22:51,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:22:51,108 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:22:51,109 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:22:51,109 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:22:51,109 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:22:51,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:22:51,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:22:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 20:22:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:22:51,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:51,144 INFO L422 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] [2020-09-24 20:22:51,145 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:51,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:51,151 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-24 20:22:51,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:51,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371541708] [2020-09-24 20:22:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:51,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:22:51,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 20:22:51,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:22:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:51,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:51,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:22:51,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:51,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:51,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:22:51,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:51,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371541708] [2020-09-24 20:22:51,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:51,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:22:51,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843176567] [2020-09-24 20:22:51,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:22:51,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:51,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:22:51,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:22:51,737 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-09-24 20:22:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:51,897 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-09-24 20:22:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:22:51,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-24 20:22:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:51,916 INFO L225 Difference]: With dead ends: 88 [2020-09-24 20:22:51,916 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 20:22:51,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:22:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 20:22:51,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 20:22:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 20:22:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-24 20:22:51,985 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2020-09-24 20:22:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:51,985 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-24 20:22:51,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:22:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-24 20:22:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:22:51,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:51,990 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:22:51,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:22:51,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:51,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-24 20:22:51,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:51,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330323773] [2020-09-24 20:22:51,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:22:52,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-09-24 20:22:52,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:22:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:22:52,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:52,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:52,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:52,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:22:52,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:22:52,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:22:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:52,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:52,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:22:52,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:22:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:52,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:22:52,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330323773] [2020-09-24 20:22:52,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:22:52,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:22:52,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121656115] [2020-09-24 20:22:52,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:22:52,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:52,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:22:52,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:22:52,701 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 6 states. [2020-09-24 20:22:52,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:52,876 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-24 20:22:52,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:22:52,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-24 20:22:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:52,881 INFO L225 Difference]: With dead ends: 68 [2020-09-24 20:22:52,881 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 20:22:52,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:22:52,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 20:22:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 20:22:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:22:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-09-24 20:22:52,911 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 34 [2020-09-24 20:22:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:52,911 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-09-24 20:22:52,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:22:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-09-24 20:22:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 20:22:52,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:52,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:52,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:22:52,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1453709960, now seen corresponding path program 2 times [2020-09-24 20:22:52,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:52,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704268719] [2020-09-24 20:22:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 20:22:53,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:53,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 20:22:53,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:22:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:53,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:53,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:22:53,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 20:22:53,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 20:22:53,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:22:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:53,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:22:53,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 20:22:53,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:22:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:22:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:22:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:53,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:53,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:22:53,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:22:53,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:53,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:22:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 20:22:53,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704268719] [2020-09-24 20:22:53,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:22:53,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 20:22:53,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178748226] [2020-09-24 20:22:53,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:22:53,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:53,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:22:53,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:22:53,490 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 5 states. [2020-09-24 20:22:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:53,575 INFO L93 Difference]: Finished difference Result 119 states and 178 transitions. [2020-09-24 20:22:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:22:53,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-09-24 20:22:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:53,579 INFO L225 Difference]: With dead ends: 119 [2020-09-24 20:22:53,579 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 20:22:53,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:22:53,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 20:22:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 20:22:53,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 20:22:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2020-09-24 20:22:53,597 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 44 [2020-09-24 20:22:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:53,598 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2020-09-24 20:22:53,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:22:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2020-09-24 20:22:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-24 20:22:53,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:53,604 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 20:22:53,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:22:53,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:53,605 INFO L82 PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 1 times [2020-09-24 20:22:53,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:53,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831845700] [2020-09-24 20:22:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:57,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 20:22:57,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:57,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3953 [2020-09-24 20:22:57,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:22:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:22:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:22:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:57,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:57,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:57,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:57,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:57,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:57,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:57,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 20:22:58,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:58,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-24 20:22:58,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:22:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:22:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:22:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:58,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:22:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-24 20:22:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:22:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:22:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:22:58,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:58,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-24 20:22:58,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:22:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:22:58,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:22:58,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:58,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 20:22:58,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:22:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:22:58,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:59,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:22:59,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:22:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:22:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:59,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:22:59,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:22:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:22:59,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 20:22:59,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:22:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:22:59,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:59,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:22:59,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:22:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:22:59,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-24 20:22:59,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831845700] [2020-09-24 20:22:59,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:22:59,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:22:59,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780440288] [2020-09-24 20:22:59,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:22:59,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:59,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:22:59,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:22:59,240 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand 13 states. [2020-09-24 20:22:59,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:59,750 INFO L93 Difference]: Finished difference Result 178 states and 308 transitions. [2020-09-24 20:22:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:22:59,750 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-09-24 20:22:59,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:59,755 INFO L225 Difference]: With dead ends: 178 [2020-09-24 20:22:59,756 INFO L226 Difference]: Without dead ends: 125 [2020-09-24 20:22:59,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:22:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-24 20:22:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 107. [2020-09-24 20:22:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 20:22:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 171 transitions. [2020-09-24 20:22:59,779 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 171 transitions. Word has length 92 [2020-09-24 20:22:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:59,780 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 171 transitions. [2020-09-24 20:22:59,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:22:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 171 transitions. [2020-09-24 20:22:59,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 20:22:59,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:59,786 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:59,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:22:59,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:59,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1234816194, now seen corresponding path program 2 times [2020-09-24 20:22:59,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:59,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589343773] [2020-09-24 20:22:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 20:23:02,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:02,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2807 [2020-09-24 20:23:02,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:23:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:23:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:02,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:02,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 20:23:03,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-09-24 20:23:03,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:23:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:23:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:23:03,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-24 20:23:03,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:23:03,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:03,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 20:23:03,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:03,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:04,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:23:04,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:04,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:04,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:04,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:23:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:04,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 20:23:04,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:04,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:23:04,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:04,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:04,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:04,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 73 proven. 82 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-09-24 20:23:04,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589343773] [2020-09-24 20:23:04,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:04,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:23:04,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057709345] [2020-09-24 20:23:04,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:23:04,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:04,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:23:04,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:04,470 INFO L87 Difference]: Start difference. First operand 107 states and 171 transitions. Second operand 14 states. [2020-09-24 20:23:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:05,432 INFO L93 Difference]: Finished difference Result 306 states and 647 transitions. [2020-09-24 20:23:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 20:23:05,433 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 111 [2020-09-24 20:23:05,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:05,439 INFO L225 Difference]: With dead ends: 306 [2020-09-24 20:23:05,439 INFO L226 Difference]: Without dead ends: 212 [2020-09-24 20:23:05,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=1163, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 20:23:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-24 20:23:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 168. [2020-09-24 20:23:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-24 20:23:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 312 transitions. [2020-09-24 20:23:05,477 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 312 transitions. Word has length 111 [2020-09-24 20:23:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:05,478 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 312 transitions. [2020-09-24 20:23:05,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:23:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 312 transitions. [2020-09-24 20:23:05,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 20:23:05,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:05,485 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:05,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:05,485 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:05,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1430781353, now seen corresponding path program 3 times [2020-09-24 20:23:05,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:05,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522323480] [2020-09-24 20:23:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 20:23:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3374 [2020-09-24 20:23:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:23:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:23:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:23:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:08,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:08,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:08,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 20:23:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-09-24 20:23:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:23:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:23:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:23:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:23:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 20:23:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:23:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:10,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 20:23:10,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:10,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 20:23:10,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:10,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:10,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:10,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:10,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:10,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:23:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:23:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 20:23:10,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:10,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 20:23:10,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:10,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 20:23:10,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:23:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:11,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 20:23:11,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:11,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:11,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:11,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:11,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:11,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:11,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 20:23:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:11,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 98 proven. 144 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-09-24 20:23:11,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522323480] [2020-09-24 20:23:11,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:11,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 20:23:11,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252066373] [2020-09-24 20:23:11,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 20:23:11,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:11,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 20:23:11,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:23:11,219 INFO L87 Difference]: Start difference. First operand 168 states and 312 transitions. Second operand 18 states. [2020-09-24 20:23:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:12,892 INFO L93 Difference]: Finished difference Result 564 states and 1306 transitions. [2020-09-24 20:23:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-24 20:23:12,893 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2020-09-24 20:23:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:12,903 INFO L225 Difference]: With dead ends: 564 [2020-09-24 20:23:12,903 INFO L226 Difference]: Without dead ends: 409 [2020-09-24 20:23:12,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=532, Invalid=2660, Unknown=0, NotChecked=0, Total=3192 [2020-09-24 20:23:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-09-24 20:23:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 283. [2020-09-24 20:23:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-09-24 20:23:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 650 transitions. [2020-09-24 20:23:12,968 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 650 transitions. Word has length 130 [2020-09-24 20:23:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:12,969 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 650 transitions. [2020-09-24 20:23:12,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 20:23:12,969 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 650 transitions. [2020-09-24 20:23:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 20:23:12,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:12,978 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:12,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:12,978 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:12,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:12,979 INFO L82 PathProgramCache]: Analyzing trace with hash 576549362, now seen corresponding path program 4 times [2020-09-24 20:23:12,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:12,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535330244] [2020-09-24 20:23:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 20:23:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 20:23:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:23:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 20:23:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 20:23:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:18,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:18,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:18,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:18,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 20:23:23,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 20:23:23,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:23:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:23:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 20:23:23,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 20:23:28,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:23:28,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:23:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:23:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 20:23:33,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:33,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:23:33,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:23:33,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:33,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:23:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:33,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:33,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:34,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-09-24 20:23:34,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:34,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:34,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:34,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:34,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 20:23:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:34,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 20:23:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 20:23:37,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2783 [2020-09-24 20:23:37,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:23:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:23:40,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3270 [2020-09-24 20:23:40,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:23:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:40,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:40,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:40,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:40,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-24 20:23:40,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:23:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:40,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 20:23:40,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:23:40,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:40,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:40,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:40,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:40,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:40,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 273 proven. 254 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-09-24 20:23:41,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535330244] [2020-09-24 20:23:41,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:41,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 20:23:41,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120152301] [2020-09-24 20:23:41,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 20:23:41,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:41,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 20:23:41,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:23:41,027 INFO L87 Difference]: Start difference. First operand 283 states and 650 transitions. Second operand 18 states.