/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-simple/fibo_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:25:44,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:25:44,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:25:44,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:25:44,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:25:44,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:25:44,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:25:44,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:25:44,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:25:44,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:25:44,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:25:44,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:25:44,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:25:44,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:25:44,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:25:44,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:25:44,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:25:44,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:25:44,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:25:44,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:25:44,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:25:44,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:25:44,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:25:44,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:25:44,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:25:44,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:25:44,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:25:44,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:25:44,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:25:44,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:25:44,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:25:44,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:25:44,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:25:44,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:25:44,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:25:44,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:25:44,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:25:44,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:25:44,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:25:44,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:25:44,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:25:44,738 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 20:25:44,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:25:44,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:25:44,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:25:44,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:25:44,766 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:25:44,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:25:44,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:25:44,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:25:44,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:25:44,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:25:44,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:25:44,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:25:44,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:25:44,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:25:44,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:25:44,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:25:44,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:25:44,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:25:44,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:25:44,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:25:44,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:25:44,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:25:44,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:25:44,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:25:44,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:25:44,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:25:44,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:25:44,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:25:44,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:25:44,772 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 20:25:45,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:25:45,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:25:45,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:25:45,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:25:45,289 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:25:45,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-24 20:25:45,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/412925916/f0da2899ec17423aa94a89e0876e640f/FLAG5c98c6aad [2020-09-24 20:25:45,915 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:25:45,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-24 20:25:45,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/412925916/f0da2899ec17423aa94a89e0876e640f/FLAG5c98c6aad [2020-09-24 20:25:46,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/412925916/f0da2899ec17423aa94a89e0876e640f [2020-09-24 20:25:46,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:25:46,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:25:46,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:46,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:25:46,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:25:46,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24493d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46, skipping insertion in model container [2020-09-24 20:25:46,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:25:46,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:25:46,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:46,571 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:25:46,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:46,603 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:25:46,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46 WrapperNode [2020-09-24 20:25:46,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:46,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:25:46,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:25:46,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:25:46,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (1/1) ... [2020-09-24 20:25:46,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:25:46,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:25:46,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:25:46,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:25:46,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (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 20:25:46,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:25:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:25:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 20:25:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:25:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:25:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:25:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 20:25:46,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:25:46,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:25:46,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:25:47,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:25:47,027 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:25:47,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:47 BoogieIcfgContainer [2020-09-24 20:25:47,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:25:47,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:25:47,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:25:47,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:25:47,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:25:46" (1/3) ... [2020-09-24 20:25:47,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328f9b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:47, skipping insertion in model container [2020-09-24 20:25:47,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:46" (2/3) ... [2020-09-24 20:25:47,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328f9b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:47, skipping insertion in model container [2020-09-24 20:25:47,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:47" (3/3) ... [2020-09-24 20:25:47,047 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2020-09-24 20:25:47,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:25:47,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:25:47,109 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:25:47,142 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:25:47,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:25:47,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:25:47,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:25:47,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:25:47,143 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:25:47,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:25:47,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:25:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:25:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:25:47,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:47,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:47,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 20:25:47,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:47,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802247125] [2020-09-24 20:25:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:47,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:47,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:25:47,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 20:25:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:25:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:25:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:47,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:47,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:47,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:25:47,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:47,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:47,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:47,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:47,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:47,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:47,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:25:47,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:47,675 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 20:25:47,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802247125] [2020-09-24 20:25:47,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:47,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:25:47,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075079026] [2020-09-24 20:25:47,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:25:47,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:47,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:25:47,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:25:47,710 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:25:47,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:47,803 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:25:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:47,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:25:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:47,820 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:25:47,820 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:25:47,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 20:25:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:25:47,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:25:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:25:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:25:47,887 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:25:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:47,887 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:25:47,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:25:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:25:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:25:47,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:47,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:47,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:25:47,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:47,896 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 20:25:47,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:47,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293344664] [2020-09-24 20:25:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:48,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:25:48,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 20:25:48,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:25:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:48,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:48,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:48,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:48,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:48,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:48,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 20:25:48,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:48,226 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 20:25:48,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293344664] [2020-09-24 20:25:48,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:48,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:25:48,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676483849] [2020-09-24 20:25:48,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:25:48,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:48,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:25:48,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:25:48,234 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:25:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:48,269 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:25:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:48,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:25:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:48,272 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:25:48,272 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:25:48,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 20:25:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:25:48,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:25:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:25:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:25:48,282 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:25:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:48,282 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:25:48,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:25:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:25:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:25:48,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:48,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 20:25:48,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:25:48,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:48,286 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 20:25:48,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:48,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587102741] [2020-09-24 20:25:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:25:50,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1955 [2020-09-24 20:25:50,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:25:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:25:50,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:50,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:50,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:50,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:25:50,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:25:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-24 20:25:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:25:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:50,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:25:50,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:25:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:50,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:25:50,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:50,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 20:25:50,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587102741] [2020-09-24 20:25:50,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:50,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:25:50,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774428164] [2020-09-24 20:25:50,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:25:50,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:50,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:25:50,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:25:50,798 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:25:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:50,891 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-24 20:25:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:25:50,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:25:50,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:50,895 INFO L225 Difference]: With dead ends: 47 [2020-09-24 20:25:50,895 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 20:25:50,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:25:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 20:25:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-24 20:25:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:25:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 20:25:50,906 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 20:25:50,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:50,907 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 20:25:50,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:25:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 20:25:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:25:50,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:50,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 20:25:50,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:25:50,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:50,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:50,911 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-24 20:25:50,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:50,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245387648] [2020-09-24 20:25:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:54,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:25:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:25:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3395 [2020-09-24 20:25:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:25:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:25:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:54,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:54,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:25:54,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:54,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:55,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-09-24 20:25:55,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:55,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:55,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:55,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:25:55,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:25:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:55,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:25:55,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:55,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:25:55,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245387648] [2020-09-24 20:25:55,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:55,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:25:55,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663481031] [2020-09-24 20:25:55,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:25:55,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:55,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:25:55,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:25:55,566 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2020-09-24 20:25:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:55,693 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-09-24 20:25:55,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:55,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 20:25:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:55,700 INFO L225 Difference]: With dead ends: 58 [2020-09-24 20:25:55,701 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 20:25:55,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 20:25:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-09-24 20:25:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 20:25:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 20:25:55,725 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-24 20:25:55,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:55,725 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 20:25:55,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:25:55,726 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 20:25:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:25:55,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:55,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 20:25:55,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:25:55,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:55,738 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-24 20:25:55,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:55,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643032767] [2020-09-24 20:25:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:56,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:25:56,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-09-24 20:25:56,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:25:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:25:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:56,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:56,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:56,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:56,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:56,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:56,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 20:25:56,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:56,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:56,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:56,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:25:56,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:56,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:56,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:56,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:25:56,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:25:56,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643032767] [2020-09-24 20:25:56,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:56,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:25:56,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026139121] [2020-09-24 20:25:56,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:56,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:56,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:56,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:56,916 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-24 20:25:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:57,014 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions. [2020-09-24 20:25:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:57,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 20:25:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:57,017 INFO L225 Difference]: With dead ends: 74 [2020-09-24 20:25:57,018 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 20:25:57,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 20:25:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-09-24 20:25:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:25:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-24 20:25:57,040 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 34 [2020-09-24 20:25:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:57,041 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-24 20:25:57,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-24 20:25:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:25:57,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:57,043 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 20:25:57,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:25:57,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 20:25:57,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:57,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267550815] [2020-09-24 20:25:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:25:58,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:25:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-09-24 20:25:58,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:25:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:25:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:58,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:58,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:58,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:59,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:25:59,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:59,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-24 20:25:59,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:59,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:59,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:25:59,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:59,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:59,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:59,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:25:59,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:59,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:59,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:59,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:59,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:25:59,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:25:59,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267550815] [2020-09-24 20:25:59,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:59,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:25:59,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154876251] [2020-09-24 20:25:59,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:59,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:59,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:59,166 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 8 states. [2020-09-24 20:25:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:59,267 INFO L93 Difference]: Finished difference Result 92 states and 144 transitions. [2020-09-24 20:25:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:59,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-24 20:25:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:59,270 INFO L225 Difference]: With dead ends: 92 [2020-09-24 20:25:59,270 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 20:25:59,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:59,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 20:25:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 62. [2020-09-24 20:25:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:25:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 99 transitions. [2020-09-24 20:25:59,286 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 99 transitions. Word has length 35 [2020-09-24 20:25:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:59,286 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 99 transitions. [2020-09-24 20:25:59,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-09-24 20:25:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:25:59,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:59,289 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:59,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:25:59,289 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:59,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1485744477, now seen corresponding path program 3 times [2020-09-24 20:25:59,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:59,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153541866] [2020-09-24 20:25:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:26:04,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:26:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:26:04,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:26:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:26:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:04,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:04,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:04,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:04,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:26:06,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:26:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2166 [2020-09-24 20:26:06,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:26:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:06,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:26:06,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:26:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:06,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 20:26:06,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:06,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:26:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:06,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:06,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:06,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:06,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:06,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:26:06,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:06,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-24 20:26:06,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153541866] [2020-09-24 20:26:06,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:06,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:26:06,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329515667] [2020-09-24 20:26:06,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:26:06,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:06,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:26:06,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:26:06,810 INFO L87 Difference]: Start difference. First operand 62 states and 99 transitions. Second operand 9 states. [2020-09-24 20:26:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:07,029 INFO L93 Difference]: Finished difference Result 88 states and 138 transitions. [2020-09-24 20:26:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:26:07,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 20:26:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:07,032 INFO L225 Difference]: With dead ends: 88 [2020-09-24 20:26:07,032 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 20:26:07,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:26:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 20:26:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2020-09-24 20:26:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 20:26:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-09-24 20:26:07,048 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 51 [2020-09-24 20:26:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:07,048 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-09-24 20:26:07,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:26:07,048 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-09-24 20:26:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:26:07,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:07,050 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:07,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:26:07,051 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:07,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1240721474, now seen corresponding path program 4 times [2020-09-24 20:26:07,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:07,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886769087] [2020-09-24 20:26:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:26:12,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:26:12,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:26:12,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:26:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:12,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:12,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:26:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:17,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:26:17,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:26:17,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:26:17,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:26:17,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:17,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:26:17,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:26:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:26:17,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:26:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-09-24 20:26:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:17,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:26:17,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:26:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:17,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:17,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:26:17,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:26:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:17,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 20:26:17,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886769087] [2020-09-24 20:26:17,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:17,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:26:17,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53653791] [2020-09-24 20:26:17,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:26:17,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:17,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:26:17,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:26:17,797 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 9 states. [2020-09-24 20:26:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:17,931 INFO L93 Difference]: Finished difference Result 101 states and 165 transitions. [2020-09-24 20:26:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:26:17,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 20:26:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:17,932 INFO L225 Difference]: With dead ends: 101 [2020-09-24 20:26:17,933 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 20:26:17,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:26:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 20:26:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 20:26:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 20:26:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2020-09-24 20:26:17,942 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 52 [2020-09-24 20:26:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:17,942 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2020-09-24 20:26:17,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:26:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2020-09-24 20:26:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:26:17,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:17,945 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:17,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:26:17,945 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-24 20:26:17,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:17,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480722180] [2020-09-24 20:26:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:18,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:22,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:22,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:26:22,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:26:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:26:22,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:26:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:26:22,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:22,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:22,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:26,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:26:26,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:26:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3625 [2020-09-24 20:26:26,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:26:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:26,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:26,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:26,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:26:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:27,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:26:27,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:26:27,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-24 20:26:27,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:27,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:27,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:27,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:27,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:27,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:26:27,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:27,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:27,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:27,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:27,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:27,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 20:26:27,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480722180] [2020-09-24 20:26:27,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:27,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:26:27,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486875441] [2020-09-24 20:26:27,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:26:27,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:27,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:26:27,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:26:27,210 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 12 states. [2020-09-24 20:26:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:27,324 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-09-24 20:26:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:26:27,325 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-24 20:26:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:27,327 INFO L225 Difference]: With dead ends: 72 [2020-09-24 20:26:27,327 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 20:26:27,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:26:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 20:26:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-09-24 20:26:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 20:26:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2020-09-24 20:26:27,337 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 53 [2020-09-24 20:26:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:27,337 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2020-09-24 20:26:27,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:26:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2020-09-24 20:26:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:26:27,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:27,339 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:27,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:26:27,339 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:27,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:27,340 INFO L82 PathProgramCache]: Analyzing trace with hash -154171110, now seen corresponding path program 5 times [2020-09-24 20:26:27,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:27,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788753143] [2020-09-24 20:26:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:26:32,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:26:32,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:26:32,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:26:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:26:32,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:32,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:32,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:32,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:32,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:33,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:33,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:26:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-24 20:26:33,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:33,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:33,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:26:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:33,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:33,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:33,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:33,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 20:26:33,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:26:33,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:33,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:33,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:33,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:33,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:26:33,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:33,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:33,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:33,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:33,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:33,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:33,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:26:33,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:33,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:33,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:33,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:33,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 20:26:33,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788753143] [2020-09-24 20:26:33,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:33,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:26:33,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185899418] [2020-09-24 20:26:33,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:26:33,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:33,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:26:33,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:26:33,428 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand 12 states. [2020-09-24 20:26:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:33,577 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2020-09-24 20:26:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:26:33,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-24 20:26:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:33,581 INFO L225 Difference]: With dead ends: 78 [2020-09-24 20:26:33,581 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 20:26:33,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:26:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 20:26:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-09-24 20:26:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 20:26:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2020-09-24 20:26:33,593 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 52 [2020-09-24 20:26:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:33,593 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2020-09-24 20:26:33,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:26:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2020-09-24 20:26:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:26:33,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:33,594 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:33,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:26:33,595 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:33,595 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 6 times [2020-09-24 20:26:33,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:33,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185042676] [2020-09-24 20:26:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking...