/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_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:23:48,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:23:48,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:23:48,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:23:48,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:23:48,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:23:48,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:23:48,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:23:48,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:23:48,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:23:48,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:23:48,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:23:48,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:23:48,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:23:48,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:23:48,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:23:48,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:23:48,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:23:48,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:23:48,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:23:48,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:23:48,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:23:48,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:23:48,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:23:48,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:23:48,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:23:48,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:23:48,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:23:48,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:23:48,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:23:48,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:23:48,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:23:48,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:23:48,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:23:48,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:23:48,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:23:48,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:23:48,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:23:48,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:23:48,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:23:48,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:23:48,735 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 20:23:48,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:23:48,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:23:48,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:23:48,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:23:48,785 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:23:48,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:23:48,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:23:48,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:23:48,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:23:48,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:23:48,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:23:48,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:23:48,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:23:48,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:23:48,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:23:48,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:23:48,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:23:48,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:23:48,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:23:48,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:23:48,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:23:48,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:48,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:23:48,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:23:48,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:23:48,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:23:48,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:23:48,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:23:48,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:23:48,792 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 20:23:49,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:23:49,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:23:49,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:23:49,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:23:49,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:23:49,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-24 20:23:49,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba01fde3/27ecf55d09c3451493a404e60772c554/FLAG5afb2b031 [2020-09-24 20:23:49,931 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:23:49,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-24 20:23:49,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba01fde3/27ecf55d09c3451493a404e60772c554/FLAG5afb2b031 [2020-09-24 20:23:50,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba01fde3/27ecf55d09c3451493a404e60772c554 [2020-09-24 20:23:50,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:23:50,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:23:50,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:50,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:23:50,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:23:50,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50, skipping insertion in model container [2020-09-24 20:23:50,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:23:50,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:50,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:50,542 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:50,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:50,578 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:50,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50 WrapperNode [2020-09-24 20:23:50,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:50,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:50,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:50,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:50,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (1/1) ... [2020-09-24 20:23:50,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:50,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:50,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:50,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:50,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:50,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:50,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 20:23:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 20:23:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:50,976 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:50,976 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:50,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:50 BoogieIcfgContainer [2020-09-24 20:23:50,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:50,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:50,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:50,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:50,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:23:50" (1/3) ... [2020-09-24 20:23:50,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:50, skipping insertion in model container [2020-09-24 20:23:50,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:50" (2/3) ... [2020-09-24 20:23:50,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:50, skipping insertion in model container [2020-09-24 20:23:50,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:50" (3/3) ... [2020-09-24 20:23:50,992 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2020-09-24 20:23:51,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:51,017 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:51,045 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:51,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:51,087 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:51,087 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:51,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:51,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:51,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:51,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:51,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:23:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:23:51,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:51,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:51,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:51,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 20:23:51,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:51,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-24 20:23:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:51,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:51,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:51,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:23:51,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-24 20:23:51,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:23:51,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:23:51,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:51,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:51,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:51,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:51,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:51,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:51,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:51,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:51,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:23:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:23:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:51,640 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 20:23:51,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-24 20:23:51,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:51,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:51,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843652712] [2020-09-24 20:23:51,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:51,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:51,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:51,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:51,678 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:23:51,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:51,779 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:23:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:23:51,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:23:51,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:51,795 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:23:51,796 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:23:51,800 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 20:23:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:23:51,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:23:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:51,862 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:23:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:51,862 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:51,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:23:51,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:51,865 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 20:23:51,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:51,866 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:51,867 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 20:23:51,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:51,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814111112] [2020-09-24 20:23:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:51,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:52,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 20:23:52,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:23:52,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:52,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:52,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:52,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:52,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 20:23:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:23:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:52,249 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 20:23:52,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814111112] [2020-09-24 20:23:52,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:52,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:52,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151286706] [2020-09-24 20:23:52,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:52,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:52,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:52,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:52,257 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:23:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:52,295 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:23:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:23:52,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:23:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:52,297 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:23:52,297 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:23:52,299 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 20:23:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:23:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:23:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:52,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:52,307 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:23:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:52,308 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:52,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:52,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:52,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:52,310 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 20:23:52,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:52,310 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:52,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:52,311 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 20:23:52,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:52,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639164382] [2020-09-24 20:23:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:23:54,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-09-24 20:23:54,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:23:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:23:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:54,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:54,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-24 20:23:54,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:23:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:54,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:54,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:54,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:23:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:23:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:54,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:23:54,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:54,810 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 20:23:54,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639164382] [2020-09-24 20:23:54,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:54,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:23:54,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076423241] [2020-09-24 20:23:54,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:54,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:54,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:54,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:54,813 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:23:54,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:54,928 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-24 20:23:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:23:54,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:23:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:54,931 INFO L225 Difference]: With dead ends: 47 [2020-09-24 20:23:54,931 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 20:23:54,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:23:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 20:23:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-24 20:23:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:23:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 20:23:54,943 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 20:23:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:54,943 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 20:23:54,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 20:23:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:23:54,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:54,946 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 20:23:54,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:54,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-24 20:23:54,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:54,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588895301] [2020-09-24 20:23:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:58,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3318 [2020-09-24 20:23:58,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:23:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:23:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:58,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:58,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:58,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:59,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:59,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:59,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-09-24 20:23:59,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:23:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:59,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:59,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:59,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:59,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:59,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:23:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:23:59,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:59,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:59,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:59,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:59,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:59,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:23:59,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588895301] [2020-09-24 20:23:59,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:59,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:23:59,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559684627] [2020-09-24 20:23:59,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:23:59,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:23:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:59,289 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 8 states. [2020-09-24 20:23:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:59,389 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2020-09-24 20:23:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:23:59,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 20:23:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:59,392 INFO L225 Difference]: With dead ends: 64 [2020-09-24 20:23:59,393 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 20:23:59,394 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 20:23:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 20:23:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2020-09-24 20:23:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 20:23:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 20:23:59,405 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-24 20:23:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:59,406 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 20:23:59,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:23:59,406 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 20:23:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:23:59,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:59,409 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 20:23:59,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:59,409 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:59,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:59,410 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-24 20:23:59,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:59,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104809249] [2020-09-24 20:23:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:24:00,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-09-24 20:24:00,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:24:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:00,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:00,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:00,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 20:24:00,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:24:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:00,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:24:00,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:00,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:24:00,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:00,512 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 20:24:00,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104809249] [2020-09-24 20:24:00,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:00,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:00,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128940318] [2020-09-24 20:24:00,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:00,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:00,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:00,514 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-24 20:24:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:00,604 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions. [2020-09-24 20:24:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:24:00,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 20:24:00,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:00,608 INFO L225 Difference]: With dead ends: 74 [2020-09-24 20:24:00,608 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 20:24:00,609 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 20:24:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 20:24:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-09-24 20:24:00,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:24:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-24 20:24:00,623 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 34 [2020-09-24 20:24:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:00,624 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-24 20:24:00,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-24 20:24:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:24:00,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:00,627 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 20:24:00,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:24:00,627 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 20:24:00,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:00,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355580895] [2020-09-24 20:24:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:24:02,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1543 [2020-09-24 20:24:02,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:24:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:02,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:24:02,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:02,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-24 20:24:02,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:02,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:02,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:24:02,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:24:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:02,735 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 20:24:02,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355580895] [2020-09-24 20:24:02,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:02,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:02,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124225313] [2020-09-24 20:24:02,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:02,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:02,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:02,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:02,738 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 8 states. [2020-09-24 20:24:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:02,830 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions. [2020-09-24 20:24:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:24:02,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-24 20:24:02,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:02,833 INFO L225 Difference]: With dead ends: 74 [2020-09-24 20:24:02,833 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 20:24:02,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:24:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 20:24:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-09-24 20:24:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:24:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 99 transitions. [2020-09-24 20:24:02,846 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 99 transitions. Word has length 35 [2020-09-24 20:24:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:02,846 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 99 transitions. [2020-09-24 20:24:02,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-09-24 20:24:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:24:02,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:02,850 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 20:24:02,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:24:02,850 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:02,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:02,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1485744477, now seen corresponding path program 3 times [2020-09-24 20:24:02,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:02,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146957049] [2020-09-24 20:24:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:07,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:24:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:24:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:24:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:24:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:07,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:07,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:07,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:24:07,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:07,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:09,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-09-24 20:24:09,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:09,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:09,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:09,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:09,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 20:24:09,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:09,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:09,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:09,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:24:09,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 20:24:09,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146957049] [2020-09-24 20:24:09,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:09,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:24:09,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765804509] [2020-09-24 20:24:09,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:24:09,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:24:09,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:24:09,938 INFO L87 Difference]: Start difference. First operand 62 states and 99 transitions. Second operand 10 states. [2020-09-24 20:24:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:10,080 INFO L93 Difference]: Finished difference Result 102 states and 167 transitions. [2020-09-24 20:24:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:24:10,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-09-24 20:24:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:10,087 INFO L225 Difference]: With dead ends: 102 [2020-09-24 20:24:10,087 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 20:24:10,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:24:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 20:24:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 56. [2020-09-24 20:24:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 20:24:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-09-24 20:24:10,113 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 51 [2020-09-24 20:24:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:10,114 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-09-24 20:24:10,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:24:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-09-24 20:24:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:24:10,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:10,116 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 20:24:10,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:24:10,117 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:10,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1240721474, now seen corresponding path program 4 times [2020-09-24 20:24:10,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:10,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108778312] [2020-09-24 20:24:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:15,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:24:15,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 20:24:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:15,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:24:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:24:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:15,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:15,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:15,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:15,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:15,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:20,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:20,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:24:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:20,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:24:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:20,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:20,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:20,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:24:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-24 20:24:20,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:20,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:20,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:20,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:20,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:24:20,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:20,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:20,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:20,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:24:20,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:20,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-24 20:24:20,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108778312] [2020-09-24 20:24:20,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:20,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:24:20,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318921267] [2020-09-24 20:24:20,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:24:20,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:20,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:24:20,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:20,765 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 12 states. [2020-09-24 20:24:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:21,000 INFO L93 Difference]: Finished difference Result 109 states and 171 transitions. [2020-09-24 20:24:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:24:21,002 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-24 20:24:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:21,006 INFO L225 Difference]: With dead ends: 109 [2020-09-24 20:24:21,006 INFO L226 Difference]: Without dead ends: 103 [2020-09-24 20:24:21,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:24:21,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-24 20:24:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 62. [2020-09-24 20:24:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:24:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 99 transitions. [2020-09-24 20:24:21,042 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 99 transitions. Word has length 52 [2020-09-24 20:24:21,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:21,046 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 99 transitions. [2020-09-24 20:24:21,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:24:21,047 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-09-24 20:24:21,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:24:21,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:21,051 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 20:24:21,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:24:21,052 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:21,052 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-24 20:24:21,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:21,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273566132] [2020-09-24 20:24:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:21,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:26,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:24:26,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:26,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:26,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:24:26,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:26,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:26,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:26,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:24:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:24:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3464 [2020-09-24 20:24:29,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:24:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:29,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:29,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:29,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 20:24:29,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:29,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:24:29,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-24 20:24:29,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:29,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:29,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:30,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:30,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:30,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:24:30,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:30,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:30,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:30,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:30,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:30,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:24:30,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 20:24:30,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273566132] [2020-09-24 20:24:30,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:30,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:24:30,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314159619] [2020-09-24 20:24:30,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:24:30,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:30,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:24:30,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:30,054 INFO L87 Difference]: Start difference. First operand 62 states and 99 transitions. Second operand 12 states. [2020-09-24 20:24:30,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:30,222 INFO L93 Difference]: Finished difference Result 115 states and 189 transitions. [2020-09-24 20:24:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:24:30,222 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-24 20:24:30,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:30,224 INFO L225 Difference]: With dead ends: 115 [2020-09-24 20:24:30,224 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 20:24:30,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:24:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 20:24:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 88. [2020-09-24 20:24:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 20:24:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 156 transitions. [2020-09-24 20:24:30,240 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 156 transitions. Word has length 53 [2020-09-24 20:24:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:30,240 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 156 transitions. [2020-09-24 20:24:30,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:24:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 156 transitions. [2020-09-24 20:24:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:24:30,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:30,243 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 20:24:30,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:24:30,243 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:30,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 5 times [2020-09-24 20:24:30,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:30,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944402517] [2020-09-24 20:24:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:30,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:24:35,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:24:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:35,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:24:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:24:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:35,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:35,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:35,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:35,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:37,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:37,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:37,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1887 [2020-09-24 20:24:37,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:37,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:24:37,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 20:24:37,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:24:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:37,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:37,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:37,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:37,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:37,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:37,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:24:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:24:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:37,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:37,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:37,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:37,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:37,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 20:24:37,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944402517] [2020-09-24 20:24:37,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:37,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:24:37,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159043206] [2020-09-24 20:24:37,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:24:37,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:37,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:24:37,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:24:37,510 INFO L87 Difference]: Start difference. First operand 88 states and 156 transitions. Second operand 11 states. [2020-09-24 20:24:37,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:37,695 INFO L93 Difference]: Finished difference Result 144 states and 251 transitions. [2020-09-24 20:24:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:24:37,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-24 20:24:37,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:37,703 INFO L225 Difference]: With dead ends: 144 [2020-09-24 20:24:37,704 INFO L226 Difference]: Without dead ends: 138 [2020-09-24 20:24:37,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:24:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-24 20:24:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2020-09-24 20:24:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 20:24:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 208 transitions. [2020-09-24 20:24:37,740 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 208 transitions. Word has length 51 [2020-09-24 20:24:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:37,740 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 208 transitions. [2020-09-24 20:24:37,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:24:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 208 transitions. [2020-09-24 20:24:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 20:24:37,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:37,745 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:37,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:24:37,746 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:37,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1446697434, now seen corresponding path program 6 times [2020-09-24 20:24:37,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:37,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47297225] [2020-09-24 20:24:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:42,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:42,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 20:24:42,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 20:24:42,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:42,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:24:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:24:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:24:42,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:42,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:42,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:42,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:42,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:42,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:42,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:42,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:42,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking...