/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_notd2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:19:22,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:19:22,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:19:22,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:19:22,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:19:22,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:19:22,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:19:22,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:19:22,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:19:22,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:19:22,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:19:22,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:19:22,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:19:22,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:19:22,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:19:22,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:19:22,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:19:22,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:19:22,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:19:22,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:19:22,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:19:22,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:19:22,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:19:22,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:19:22,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:19:22,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:19:22,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:19:22,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:19:22,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:19:22,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:19:22,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:19:22,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:19:22,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:19:22,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:19:22,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:19:22,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:19:22,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:19:22,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:19:22,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:19:22,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:19:22,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:19:22,747 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 [2020-10-12 16:19:22,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:19:22,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:19:22,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:19:22,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:19:22,799 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:19:22,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:19:22,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:19:22,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:19:22,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:19:22,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:19:22,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:19:22,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:19:22,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:19:22,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:19:22,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:19:22,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:19:22,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:19:22,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:19:22,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:19:22,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:19:22,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:19:22,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:19:22,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:19:22,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:19:22,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:19:22,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:19:22,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:19:22,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:19:22,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:19:22,809 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-12 16:19:23,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:19:23,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:19:23,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:19:23,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:19:23,151 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:19:23,152 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_notd2.c [2020-10-12 16:19:23,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68876c51/ac0a35806b264b4189236ceede7be0da/FLAG2deb883b2 [2020-10-12 16:19:23,647 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:19:23,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested_delay_notd2.c [2020-10-12 16:19:23,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68876c51/ac0a35806b264b4189236ceede7be0da/FLAG2deb883b2 [2020-10-12 16:19:24,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68876c51/ac0a35806b264b4189236ceede7be0da [2020-10-12 16:19:24,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:19:24,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:19:24,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:19:24,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:19:24,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:19:24,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6171eb26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24, skipping insertion in model container [2020-10-12 16:19:24,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:19:24,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:19:24,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:19:24,329 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:19:24,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:19:24,365 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:19:24,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24 WrapperNode [2020-10-12 16:19:24,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:19:24,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:19:24,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:19:24,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:19:24,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (1/1) ... [2020-10-12 16:19:24,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:19:24,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:19:24,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:19:24,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:19:24,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (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 [2020-10-12 16:19:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:19:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:19:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:19:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:19:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:19:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:19:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:19:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:19:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:19:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:19:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:19:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:19:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:19:24,761 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:19:24,761 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 16:19:24,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:19:24 BoogieIcfgContainer [2020-10-12 16:19:24,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:19:24,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:19:24,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:19:24,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:19:24,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:19:24" (1/3) ... [2020-10-12 16:19:24,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e5cf4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:19:24, skipping insertion in model container [2020-10-12 16:19:24,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:24" (2/3) ... [2020-10-12 16:19:24,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e5cf4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:19:24, skipping insertion in model container [2020-10-12 16:19:24,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:19:24" (3/3) ... [2020-10-12 16:19:24,774 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_delay_notd2.c [2020-10-12 16:19:24,784 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:19:24,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:19:24,807 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:19:24,835 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:19:24,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:19:24,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:19:24,836 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:19:24,836 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:19:24,836 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:19:24,836 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:19:24,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:19:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-12 16:19:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 16:19:24,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:24,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:24,871 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:24,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1722053448, now seen corresponding path program 1 times [2020-10-12 16:19:24,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:24,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697967092] [2020-10-12 16:19:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:25,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:25,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 16:19:25,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:19:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-12 16:19:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 16:19:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 16:19:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:25,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:25,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:25,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:19:25,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:19:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:19:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:25,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:25,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:25,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:19:25,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:19:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:19:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:25,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697967092] [2020-10-12 16:19:25,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:19:25,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 16:19:25,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205693061] [2020-10-12 16:19:25,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 16:19:25,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:25,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 16:19:25,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:19:25,634 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-10-12 16:19:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:25,780 INFO L93 Difference]: Finished difference Result 55 states and 83 transitions. [2020-10-12 16:19:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 16:19:25,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 16:19:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:25,792 INFO L225 Difference]: With dead ends: 55 [2020-10-12 16:19:25,793 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 16:19:25,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:19:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 16:19:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-12 16:19:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 16:19:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-12 16:19:25,844 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 21 [2020-10-12 16:19:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:25,844 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-12 16:19:25,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 16:19:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-12 16:19:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 16:19:25,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:25,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:25,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:19:25,847 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1770070695, now seen corresponding path program 1 times [2020-10-12 16:19:25,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:25,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442809790] [2020-10-12 16:19:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:25,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:26,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 16:19:26,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:26,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 16:19:26,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:19:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:19:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:26,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:26,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:26,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:26,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:19:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:19:26,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:26,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442809790] [2020-10-12 16:19:26,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:19:26,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:19:26,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135770322] [2020-10-12 16:19:26,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:19:26,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:19:26,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:19:26,094 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2020-10-12 16:19:26,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:26,227 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-10-12 16:19:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:19:26,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-12 16:19:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:26,229 INFO L225 Difference]: With dead ends: 48 [2020-10-12 16:19:26,229 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 16:19:26,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:19:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 16:19:26,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-12 16:19:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 16:19:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-12 16:19:26,238 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 21 [2020-10-12 16:19:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:26,238 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-12 16:19:26,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:19:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-12 16:19:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 16:19:26,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:26,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:26,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:19:26,240 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:26,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:26,241 INFO L82 PathProgramCache]: Analyzing trace with hash -810909125, now seen corresponding path program 1 times [2020-10-12 16:19:26,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:26,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936181248] [2020-10-12 16:19:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:26,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 16:19:26,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:19:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-12 16:19:26,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:19:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 16:19:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:19:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:26,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:26,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:26,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:26,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:19:26,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:26,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:19:26,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:26,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:26,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:26,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:26,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:26,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:19:26,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:19:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:19:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:26,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936181248] [2020-10-12 16:19:26,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:19:26,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:19:26,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623124506] [2020-10-12 16:19:26,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:19:26,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:26,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:19:26,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:19:26,910 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 7 states. [2020-10-12 16:19:27,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:27,145 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-10-12 16:19:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:19:27,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-12 16:19:27,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:27,147 INFO L225 Difference]: With dead ends: 49 [2020-10-12 16:19:27,147 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 16:19:27,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:19:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 16:19:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-12 16:19:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 16:19:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-12 16:19:27,156 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2020-10-12 16:19:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:27,157 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-12 16:19:27,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:19:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-12 16:19:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 16:19:27,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:27,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:27,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:19:27,159 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1203936135, now seen corresponding path program 1 times [2020-10-12 16:19:27,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:27,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494579129] [2020-10-12 16:19:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:27,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 16:19:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 16:19:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:19:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 16:19:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:27,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:19:27,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:27,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:27,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:19:27,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:27,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494579129] [2020-10-12 16:19:27,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:27,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 16:19:27,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556696804] [2020-10-12 16:19:27,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:19:27,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:19:27,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:19:27,366 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 6 states. [2020-10-12 16:19:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:27,513 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-12 16:19:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:19:27,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-12 16:19:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:27,516 INFO L225 Difference]: With dead ends: 53 [2020-10-12 16:19:27,516 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 16:19:27,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:19:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 16:19:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-12 16:19:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 16:19:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-12 16:19:27,529 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2020-10-12 16:19:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:27,530 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-12 16:19:27,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:19:27,530 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-12 16:19:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 16:19:27,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:27,532 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 16:19:27,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:19:27,533 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1431967529, now seen corresponding path program 1 times [2020-10-12 16:19:27,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:27,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215845798] [2020-10-12 16:19:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:28,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:19:28,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 16:19:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-12 16:19:28,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:19:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 16:19:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:19:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:28,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:28,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:28,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:19:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:19:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:28,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:28,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 16:19:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:19:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:19:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 16:19:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:28,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215845798] [2020-10-12 16:19:28,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:28,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 16:19:28,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444533137] [2020-10-12 16:19:28,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:19:28,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:28,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:19:28,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:19:28,289 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 10 states. [2020-10-12 16:19:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:28,572 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2020-10-12 16:19:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:19:28,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-12 16:19:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:28,577 INFO L225 Difference]: With dead ends: 74 [2020-10-12 16:19:28,578 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 16:19:28,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:19:28,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 16:19:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2020-10-12 16:19:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 16:19:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-12 16:19:28,597 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 27 [2020-10-12 16:19:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:28,598 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-12 16:19:28,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:19:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-12 16:19:28,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 16:19:28,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:28,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:28,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:19:28,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:28,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:28,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1038940519, now seen corresponding path program 2 times [2020-10-12 16:19:28,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:28,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169106810] [2020-10-12 16:19:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:28,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:19:28,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:28,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 16:19:28,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:28,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:19:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 16:19:28,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:28,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:28,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:28,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:28,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:28,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:28,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:28,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:28,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169106810] [2020-10-12 16:19:28,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 16:19:28,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150495816] [2020-10-12 16:19:28,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:19:28,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:28,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:19:28,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:19:28,771 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 7 states. [2020-10-12 16:19:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:28,942 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2020-10-12 16:19:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:19:28,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-12 16:19:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:28,944 INFO L225 Difference]: With dead ends: 81 [2020-10-12 16:19:28,944 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 16:19:28,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:19:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 16:19:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-12 16:19:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 16:19:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-10-12 16:19:28,952 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 27 [2020-10-12 16:19:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:28,953 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-10-12 16:19:28,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:19:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-10-12 16:19:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 16:19:28,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:28,954 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] [2020-10-12 16:19:28,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:19:28,955 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:28,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:28,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1544018311, now seen corresponding path program 2 times [2020-10-12 16:19:28,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:28,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618816672] [2020-10-12 16:19:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:29,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:29,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:29,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:29,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 16:19:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:19:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-12 16:19:29,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:19:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 16:19:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:30,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:30,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:30,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:30,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:30,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:30,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:30,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:30,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:30,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618816672] [2020-10-12 16:19:30,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:30,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 16:19:30,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126013502] [2020-10-12 16:19:30,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:19:30,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:30,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:19:30,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:19:30,050 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 9 states. [2020-10-12 16:19:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:30,409 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2020-10-12 16:19:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 16:19:30,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-12 16:19:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:30,411 INFO L225 Difference]: With dead ends: 114 [2020-10-12 16:19:30,411 INFO L226 Difference]: Without dead ends: 79 [2020-10-12 16:19:30,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:19:30,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-12 16:19:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-10-12 16:19:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 16:19:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2020-10-12 16:19:30,422 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 30 [2020-10-12 16:19:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:30,422 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2020-10-12 16:19:30,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:19:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2020-10-12 16:19:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 16:19:30,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:30,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:30,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:19:30,424 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:30,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1771115961, now seen corresponding path program 3 times [2020-10-12 16:19:30,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:30,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082953982] [2020-10-12 16:19:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:30,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:30,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:30,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 16:19:30,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:30,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 16:19:30,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:19:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 16:19:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:30,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:30,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:30,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:30,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:30,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:30,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:30,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:30,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:30,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:19:30,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:30,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082953982] [2020-10-12 16:19:30,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:30,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:19:30,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679530238] [2020-10-12 16:19:30,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:19:30,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:30,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:19:30,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:19:30,616 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 8 states. [2020-10-12 16:19:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:30,841 INFO L93 Difference]: Finished difference Result 147 states and 186 transitions. [2020-10-12 16:19:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:19:30,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-12 16:19:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:30,844 INFO L225 Difference]: With dead ends: 147 [2020-10-12 16:19:30,844 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 16:19:30,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:19:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 16:19:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2020-10-12 16:19:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 16:19:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2020-10-12 16:19:30,879 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 30 [2020-10-12 16:19:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:30,880 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2020-10-12 16:19:30,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:19:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2020-10-12 16:19:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 16:19:30,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:30,881 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:30,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:19:30,881 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:30,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:30,882 INFO L82 PathProgramCache]: Analyzing trace with hash -129187801, now seen corresponding path program 4 times [2020-10-12 16:19:30,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:30,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212102476] [2020-10-12 16:19:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:30,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:30,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 16:19:30,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:30,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 16:19:30,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:19:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 16:19:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:31,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:31,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:31,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:31,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:31,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:31,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:31,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:31,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:31,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212102476] [2020-10-12 16:19:31,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:31,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 16:19:31,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677763517] [2020-10-12 16:19:31,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:19:31,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:31,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:19:31,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:19:31,074 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 9 states. [2020-10-12 16:19:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:31,244 INFO L93 Difference]: Finished difference Result 173 states and 217 transitions. [2020-10-12 16:19:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:19:31,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-12 16:19:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:31,246 INFO L225 Difference]: With dead ends: 173 [2020-10-12 16:19:31,246 INFO L226 Difference]: Without dead ends: 109 [2020-10-12 16:19:31,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 16:19:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-12 16:19:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2020-10-12 16:19:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-12 16:19:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2020-10-12 16:19:31,258 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 33 [2020-10-12 16:19:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:31,258 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2020-10-12 16:19:31,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:19:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2020-10-12 16:19:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 16:19:31,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:31,259 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:31,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:19:31,260 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:31,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:31,260 INFO L82 PathProgramCache]: Analyzing trace with hash 865200057, now seen corresponding path program 3 times [2020-10-12 16:19:31,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:31,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094322441] [2020-10-12 16:19:31,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:32,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:32,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 16:19:32,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:19:32,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 960 [2020-10-12 16:19:32,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 16:19:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:19:32,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:32,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:32,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:32,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:32,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:32,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:32,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:32,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:32,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:32,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:32,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:32,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:32,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:32,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:32,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094322441] [2020-10-12 16:19:32,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:32,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 16:19:32,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558383177] [2020-10-12 16:19:32,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:19:32,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:32,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:19:32,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:19:32,342 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand 11 states. [2020-10-12 16:19:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:32,812 INFO L93 Difference]: Finished difference Result 216 states and 271 transitions. [2020-10-12 16:19:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 16:19:32,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-12 16:19:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:32,814 INFO L225 Difference]: With dead ends: 216 [2020-10-12 16:19:32,814 INFO L226 Difference]: Without dead ends: 137 [2020-10-12 16:19:32,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-12 16:19:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-12 16:19:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 89. [2020-10-12 16:19:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 16:19:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2020-10-12 16:19:32,825 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 36 [2020-10-12 16:19:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:32,826 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2020-10-12 16:19:32,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:19:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2020-10-12 16:19:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 16:19:32,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:32,827 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:32,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 16:19:32,827 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:32,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:32,828 INFO L82 PathProgramCache]: Analyzing trace with hash -114632967, now seen corresponding path program 5 times [2020-10-12 16:19:32,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:32,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422974583] [2020-10-12 16:19:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:32,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:32,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:32,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 16:19:32,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 16:19:32,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:19:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 16:19:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:33,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:33,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:19:33,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:33,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:33,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:33,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:33,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:33,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:33,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422974583] [2020-10-12 16:19:33,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:33,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 16:19:33,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15612769] [2020-10-12 16:19:33,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:19:33,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:33,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:19:33,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:19:33,086 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 10 states. [2020-10-12 16:19:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:33,363 INFO L93 Difference]: Finished difference Result 194 states and 244 transitions. [2020-10-12 16:19:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:19:33,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-12 16:19:33,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:33,365 INFO L225 Difference]: With dead ends: 194 [2020-10-12 16:19:33,365 INFO L226 Difference]: Without dead ends: 117 [2020-10-12 16:19:33,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:19:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-12 16:19:33,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 100. [2020-10-12 16:19:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 16:19:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2020-10-12 16:19:33,375 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 36 [2020-10-12 16:19:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:33,375 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2020-10-12 16:19:33,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:19:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2020-10-12 16:19:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 16:19:33,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:33,377 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:33,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 16:19:33,377 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash -303270169, now seen corresponding path program 6 times [2020-10-12 16:19:33,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:33,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710319623] [2020-10-12 16:19:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:33,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 16:19:33,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:33,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 16:19:33,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 16:19:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 16:19:33,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:33,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:33,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:33,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:33,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:33,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:33,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:33,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:33,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:33,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710319623] [2020-10-12 16:19:33,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:33,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 16:19:33,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504829851] [2020-10-12 16:19:33,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:19:33,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:33,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:19:33,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:19:33,617 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand 11 states. [2020-10-12 16:19:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:33,885 INFO L93 Difference]: Finished difference Result 221 states and 277 transitions. [2020-10-12 16:19:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:19:33,886 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-12 16:19:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:33,887 INFO L225 Difference]: With dead ends: 221 [2020-10-12 16:19:33,887 INFO L226 Difference]: Without dead ends: 133 [2020-10-12 16:19:33,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:19:33,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-12 16:19:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-10-12 16:19:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-12 16:19:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2020-10-12 16:19:33,898 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 39 [2020-10-12 16:19:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:33,898 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2020-10-12 16:19:33,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:19:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2020-10-12 16:19:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 16:19:33,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:33,899 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:33,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 16:19:33,900 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:33,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1197098759, now seen corresponding path program 4 times [2020-10-12 16:19:33,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:33,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512330007] [2020-10-12 16:19:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:34,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:34,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 16:19:34,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:19:34,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-12 16:19:34,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 16:19:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 16:19:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:34,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:34,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:34,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:34,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:34,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:34,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:34,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:34,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:34,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:34,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-12 16:19:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:34,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512330007] [2020-10-12 16:19:34,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:34,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 16:19:34,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041925810] [2020-10-12 16:19:34,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:19:34,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:34,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:19:34,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:19:34,876 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand 13 states. [2020-10-12 16:19:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:35,639 INFO L93 Difference]: Finished difference Result 275 states and 346 transitions. [2020-10-12 16:19:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 16:19:35,640 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-12 16:19:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:35,642 INFO L225 Difference]: With dead ends: 275 [2020-10-12 16:19:35,642 INFO L226 Difference]: Without dead ends: 173 [2020-10-12 16:19:35,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=1445, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 16:19:35,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-12 16:19:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 152. [2020-10-12 16:19:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-12 16:19:35,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 191 transitions. [2020-10-12 16:19:35,656 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 191 transitions. Word has length 42 [2020-10-12 16:19:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:35,656 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 191 transitions. [2020-10-12 16:19:35,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:19:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 191 transitions. [2020-10-12 16:19:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 16:19:35,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:35,658 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:35,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 16:19:35,658 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:35,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:35,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2118035513, now seen corresponding path program 7 times [2020-10-12 16:19:35,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:35,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064097469] [2020-10-12 16:19:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:35,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:35,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:35,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:35,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 16:19:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 16:19:35,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:35,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 16:19:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 16:19:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:35,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:35,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:35,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:35,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:35,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:35,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:35,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:35,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:35,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:35,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:35,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064097469] [2020-10-12 16:19:35,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:35,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 16:19:35,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966741088] [2020-10-12 16:19:35,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:19:35,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:35,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:19:35,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:19:35,910 INFO L87 Difference]: Start difference. First operand 152 states and 191 transitions. Second operand 12 states. [2020-10-12 16:19:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:36,236 INFO L93 Difference]: Finished difference Result 336 states and 427 transitions. [2020-10-12 16:19:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:19:36,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-12 16:19:36,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:36,239 INFO L225 Difference]: With dead ends: 336 [2020-10-12 16:19:36,239 INFO L226 Difference]: Without dead ends: 196 [2020-10-12 16:19:36,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-12 16:19:36,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-12 16:19:36,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 171. [2020-10-12 16:19:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-12 16:19:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 213 transitions. [2020-10-12 16:19:36,282 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 213 transitions. Word has length 42 [2020-10-12 16:19:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:36,283 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 213 transitions. [2020-10-12 16:19:36,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:19:36,283 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 213 transitions. [2020-10-12 16:19:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 16:19:36,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:36,284 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:36,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 16:19:36,285 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:36,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:36,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1259871655, now seen corresponding path program 8 times [2020-10-12 16:19:36,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:36,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807978833] [2020-10-12 16:19:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:36,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:36,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 16:19:36,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:36,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 16:19:36,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:36,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 16:19:36,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:36,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 16:19:36,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:36,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:36,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:36,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:36,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:36,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:36,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807978833] [2020-10-12 16:19:36,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:36,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 16:19:36,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664573036] [2020-10-12 16:19:36,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:19:36,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:36,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:19:36,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:19:36,634 INFO L87 Difference]: Start difference. First operand 171 states and 213 transitions. Second operand 13 states. [2020-10-12 16:19:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:36,971 INFO L93 Difference]: Finished difference Result 380 states and 480 transitions. [2020-10-12 16:19:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 16:19:36,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-12 16:19:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:36,973 INFO L225 Difference]: With dead ends: 380 [2020-10-12 16:19:36,974 INFO L226 Difference]: Without dead ends: 221 [2020-10-12 16:19:36,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-12 16:19:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-12 16:19:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2020-10-12 16:19:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-12 16:19:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 241 transitions. [2020-10-12 16:19:36,999 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 241 transitions. Word has length 45 [2020-10-12 16:19:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:36,999 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 241 transitions. [2020-10-12 16:19:36,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:19:36,999 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 241 transitions. [2020-10-12 16:19:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 16:19:37,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:37,000 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:37,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 16:19:37,000 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash 325556793, now seen corresponding path program 5 times [2020-10-12 16:19:37,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:37,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695970144] [2020-10-12 16:19:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:37,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:37,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:37,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:37,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:38,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:38,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 16:19:38,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:19:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-12 16:19:38,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 16:19:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 16:19:38,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:38,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:38,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:38,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:38,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:38,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:38,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:38,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:38,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:38,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:38,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695970144] [2020-10-12 16:19:38,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:38,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 16:19:38,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146809767] [2020-10-12 16:19:38,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 16:19:38,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:38,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 16:19:38,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 16:19:38,361 INFO L87 Difference]: Start difference. First operand 194 states and 241 transitions. Second operand 15 states. [2020-10-12 16:19:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:39,057 INFO L93 Difference]: Finished difference Result 439 states and 553 transitions. [2020-10-12 16:19:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 16:19:39,058 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-12 16:19:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:39,060 INFO L225 Difference]: With dead ends: 439 [2020-10-12 16:19:39,060 INFO L226 Difference]: Without dead ends: 255 [2020-10-12 16:19:39,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 16:19:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-12 16:19:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 137. [2020-10-12 16:19:39,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-12 16:19:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 170 transitions. [2020-10-12 16:19:39,076 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 170 transitions. Word has length 48 [2020-10-12 16:19:39,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:39,076 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 170 transitions. [2020-10-12 16:19:39,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 16:19:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 170 transitions. [2020-10-12 16:19:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 16:19:39,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:39,078 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:39,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 16:19:39,078 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:39,079 INFO L82 PathProgramCache]: Analyzing trace with hash -654276231, now seen corresponding path program 9 times [2020-10-12 16:19:39,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:39,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212059846] [2020-10-12 16:19:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:39,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 16:19:39,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 16:19:39,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 16:19:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 16:19:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:39,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:39,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:39,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:39,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:39,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:39,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:39,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:39,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:39,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:39,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:39,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:39,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:39,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:39,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212059846] [2020-10-12 16:19:39,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:39,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 16:19:39,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478507155] [2020-10-12 16:19:39,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:19:39,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:39,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:19:39,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:19:39,439 INFO L87 Difference]: Start difference. First operand 137 states and 170 transitions. Second operand 14 states. [2020-10-12 16:19:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:39,828 INFO L93 Difference]: Finished difference Result 290 states and 364 transitions. [2020-10-12 16:19:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:19:39,829 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-12 16:19:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:39,831 INFO L225 Difference]: With dead ends: 290 [2020-10-12 16:19:39,831 INFO L226 Difference]: Without dead ends: 165 [2020-10-12 16:19:39,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-12 16:19:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-12 16:19:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2020-10-12 16:19:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-12 16:19:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 183 transitions. [2020-10-12 16:19:39,852 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 183 transitions. Word has length 48 [2020-10-12 16:19:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:39,853 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 183 transitions. [2020-10-12 16:19:39,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:19:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 183 transitions. [2020-10-12 16:19:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 16:19:39,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:39,855 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:39,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 16:19:39,855 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:39,856 INFO L82 PathProgramCache]: Analyzing trace with hash -753159065, now seen corresponding path program 10 times [2020-10-12 16:19:39,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:39,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144479960] [2020-10-12 16:19:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:39,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 16:19:40,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-12 16:19:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 16:19:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 16:19:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:40,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:40,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:40,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:40,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:40,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:40,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144479960] [2020-10-12 16:19:40,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:40,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 16:19:40,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439888599] [2020-10-12 16:19:40,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 16:19:40,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 16:19:40,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-12 16:19:40,201 INFO L87 Difference]: Start difference. First operand 148 states and 183 transitions. Second operand 15 states. [2020-10-12 16:19:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:40,552 INFO L93 Difference]: Finished difference Result 317 states and 397 transitions. [2020-10-12 16:19:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 16:19:40,553 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-12 16:19:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:40,554 INFO L225 Difference]: With dead ends: 317 [2020-10-12 16:19:40,554 INFO L226 Difference]: Without dead ends: 181 [2020-10-12 16:19:40,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-12 16:19:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-12 16:19:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 162. [2020-10-12 16:19:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 16:19:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 200 transitions. [2020-10-12 16:19:40,572 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 200 transitions. Word has length 51 [2020-10-12 16:19:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:40,572 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 200 transitions. [2020-10-12 16:19:40,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 16:19:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 200 transitions. [2020-10-12 16:19:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 16:19:40,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:40,573 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:40,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 16:19:40,574 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:40,574 INFO L82 PathProgramCache]: Analyzing trace with hash 755731321, now seen corresponding path program 6 times [2020-10-12 16:19:40,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:40,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991421920] [2020-10-12 16:19:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:41,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:41,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 16:19:41,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:19:41,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1264 [2020-10-12 16:19:41,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:41,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 16:19:41,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 16:19:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:42,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:42,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:42,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:42,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:42,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:42,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:42,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:42,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:42,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:42,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:42,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:42,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:42,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991421920] [2020-10-12 16:19:42,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:42,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 16:19:42,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271608196] [2020-10-12 16:19:42,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 16:19:42,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:42,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 16:19:42,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:19:42,030 INFO L87 Difference]: Start difference. First operand 162 states and 200 transitions. Second operand 17 states. [2020-10-12 16:19:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:43,318 INFO L93 Difference]: Finished difference Result 383 states and 482 transitions. [2020-10-12 16:19:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-12 16:19:43,318 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-12 16:19:43,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:43,322 INFO L225 Difference]: With dead ends: 383 [2020-10-12 16:19:43,322 INFO L226 Difference]: Without dead ends: 233 [2020-10-12 16:19:43,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1135, Invalid=3025, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 16:19:43,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-12 16:19:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 212. [2020-10-12 16:19:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-12 16:19:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 267 transitions. [2020-10-12 16:19:43,354 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 267 transitions. Word has length 54 [2020-10-12 16:19:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:43,354 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 267 transitions. [2020-10-12 16:19:43,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 16:19:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 267 transitions. [2020-10-12 16:19:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 16:19:43,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:43,355 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:43,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 16:19:43,356 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:43,356 INFO L82 PathProgramCache]: Analyzing trace with hash -224101703, now seen corresponding path program 11 times [2020-10-12 16:19:43,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:43,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238281535] [2020-10-12 16:19:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:43,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:43,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:43,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:43,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 16:19:43,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 16:19:43,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 16:19:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 16:19:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:43,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:43,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:43,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:43,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:43,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:43,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:43,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:43,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:43,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:43,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:43,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238281535] [2020-10-12 16:19:43,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:43,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 16:19:43,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314054657] [2020-10-12 16:19:43,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 16:19:43,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:43,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 16:19:43,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:19:43,719 INFO L87 Difference]: Start difference. First operand 212 states and 267 transitions. Second operand 16 states. [2020-10-12 16:19:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:44,047 INFO L93 Difference]: Finished difference Result 456 states and 579 transitions. [2020-10-12 16:19:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 16:19:44,047 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-12 16:19:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:44,049 INFO L225 Difference]: With dead ends: 456 [2020-10-12 16:19:44,049 INFO L226 Difference]: Without dead ends: 256 [2020-10-12 16:19:44,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-12 16:19:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-12 16:19:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 231. [2020-10-12 16:19:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-12 16:19:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 289 transitions. [2020-10-12 16:19:44,072 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 289 transitions. Word has length 54 [2020-10-12 16:19:44,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:44,072 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 289 transitions. [2020-10-12 16:19:44,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 16:19:44,073 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 289 transitions. [2020-10-12 16:19:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 16:19:44,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:44,080 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:44,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 16:19:44,080 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:44,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1606206681, now seen corresponding path program 12 times [2020-10-12 16:19:44,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:44,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476990742] [2020-10-12 16:19:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:44,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:44,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 16:19:44,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 16:19:44,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:44,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:44,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:44,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:44,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476990742] [2020-10-12 16:19:44,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:44,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 16:19:44,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651010036] [2020-10-12 16:19:44,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 16:19:44,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:44,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 16:19:44,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:19:44,417 INFO L87 Difference]: Start difference. First operand 231 states and 289 transitions. Second operand 17 states. [2020-10-12 16:19:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:44,830 INFO L93 Difference]: Finished difference Result 500 states and 632 transitions. [2020-10-12 16:19:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 16:19:44,830 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-12 16:19:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:44,832 INFO L225 Difference]: With dead ends: 500 [2020-10-12 16:19:44,832 INFO L226 Difference]: Without dead ends: 281 [2020-10-12 16:19:44,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-12 16:19:44,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-12 16:19:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 254. [2020-10-12 16:19:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-12 16:19:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 317 transitions. [2020-10-12 16:19:44,852 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 317 transitions. Word has length 57 [2020-10-12 16:19:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:44,852 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 317 transitions. [2020-10-12 16:19:44,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 16:19:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 317 transitions. [2020-10-12 16:19:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 16:19:44,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:44,854 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:44,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 16:19:44,856 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:44,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:44,856 INFO L82 PathProgramCache]: Analyzing trace with hash 935693497, now seen corresponding path program 7 times [2020-10-12 16:19:44,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:44,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129875207] [2020-10-12 16:19:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:44,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:45,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:46,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:46,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 16:19:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:19:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-12 16:19:46,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 16:19:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 16:19:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:46,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:46,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:46,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:46,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:46,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:46,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:19:46,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:46,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:46,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:46,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:46,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:46,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:46,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:46,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:46,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:46,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129875207] [2020-10-12 16:19:46,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:46,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 16:19:46,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758755323] [2020-10-12 16:19:46,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 16:19:46,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:46,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 16:19:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:19:46,400 INFO L87 Difference]: Start difference. First operand 254 states and 317 transitions. Second operand 19 states. [2020-10-12 16:19:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:48,037 INFO L93 Difference]: Finished difference Result 576 states and 728 transitions. [2020-10-12 16:19:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-12 16:19:48,039 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-12 16:19:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:48,042 INFO L225 Difference]: With dead ends: 576 [2020-10-12 16:19:48,042 INFO L226 Difference]: Without dead ends: 334 [2020-10-12 16:19:48,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1519, Invalid=4031, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 16:19:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-12 16:19:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 253. [2020-10-12 16:19:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-12 16:19:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 317 transitions. [2020-10-12 16:19:48,064 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 317 transitions. Word has length 60 [2020-10-12 16:19:48,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:48,065 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 317 transitions. [2020-10-12 16:19:48,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 16:19:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 317 transitions. [2020-10-12 16:19:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 16:19:48,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:48,066 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:48,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 16:19:48,066 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:48,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:48,067 INFO L82 PathProgramCache]: Analyzing trace with hash -44139527, now seen corresponding path program 13 times [2020-10-12 16:19:48,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:48,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324323603] [2020-10-12 16:19:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:48,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:48,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 16:19:48,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:48,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 16:19:48,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 16:19:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 16:19:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:48,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:48,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:48,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:48,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:48,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324323603] [2020-10-12 16:19:48,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:48,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 16:19:48,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271464281] [2020-10-12 16:19:48,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 16:19:48,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:48,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 16:19:48,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-12 16:19:48,418 INFO L87 Difference]: Start difference. First operand 253 states and 317 transitions. Second operand 18 states. [2020-10-12 16:19:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:48,883 INFO L93 Difference]: Finished difference Result 539 states and 681 transitions. [2020-10-12 16:19:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 16:19:48,883 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-12 16:19:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:48,886 INFO L225 Difference]: With dead ends: 539 [2020-10-12 16:19:48,886 INFO L226 Difference]: Without dead ends: 298 [2020-10-12 16:19:48,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 16:19:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-12 16:19:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 273. [2020-10-12 16:19:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-12 16:19:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 341 transitions. [2020-10-12 16:19:48,917 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 341 transitions. Word has length 60 [2020-10-12 16:19:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:48,917 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 341 transitions. [2020-10-12 16:19:48,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 16:19:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 341 transitions. [2020-10-12 16:19:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 16:19:48,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:48,919 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:48,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 16:19:48,919 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:48,919 INFO L82 PathProgramCache]: Analyzing trace with hash -472206873, now seen corresponding path program 14 times [2020-10-12 16:19:48,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:48,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744572498] [2020-10-12 16:19:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:49,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:49,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 16:19:49,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 16:19:49,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 16:19:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 16:19:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:49,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:49,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:49,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:49,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:49,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:49,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:49,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744572498] [2020-10-12 16:19:49,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:49,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 16:19:49,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497225292] [2020-10-12 16:19:49,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 16:19:49,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:49,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 16:19:49,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:19:49,400 INFO L87 Difference]: Start difference. First operand 273 states and 341 transitions. Second operand 19 states. [2020-10-12 16:19:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:49,968 INFO L93 Difference]: Finished difference Result 584 states and 736 transitions. [2020-10-12 16:19:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 16:19:49,971 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-12 16:19:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:49,974 INFO L225 Difference]: With dead ends: 584 [2020-10-12 16:19:49,974 INFO L226 Difference]: Without dead ends: 323 [2020-10-12 16:19:49,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=414, Invalid=776, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 16:19:49,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-12 16:19:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 296. [2020-10-12 16:19:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-12 16:19:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 369 transitions. [2020-10-12 16:19:49,998 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 369 transitions. Word has length 63 [2020-10-12 16:19:49,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:49,998 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 369 transitions. [2020-10-12 16:19:49,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 16:19:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 369 transitions. [2020-10-12 16:19:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 16:19:50,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:50,000 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:50,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 16:19:50,001 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:50,002 INFO L82 PathProgramCache]: Analyzing trace with hash -288776711, now seen corresponding path program 8 times [2020-10-12 16:19:50,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:50,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778634373] [2020-10-12 16:19:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:50,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:51,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 16:19:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:19:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-10-12 16:19:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 16:19:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 16:19:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:51,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:51,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:51,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:51,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:51,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:51,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:51,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:51,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:51,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778634373] [2020-10-12 16:19:51,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:51,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 16:19:51,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799774279] [2020-10-12 16:19:51,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 16:19:51,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:51,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 16:19:51,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2020-10-12 16:19:51,390 INFO L87 Difference]: Start difference. First operand 296 states and 369 transitions. Second operand 21 states. [2020-10-12 16:19:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:53,100 INFO L93 Difference]: Finished difference Result 666 states and 840 transitions. [2020-10-12 16:19:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-12 16:19:53,101 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 66 [2020-10-12 16:19:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:53,103 INFO L225 Difference]: With dead ends: 666 [2020-10-12 16:19:53,103 INFO L226 Difference]: Without dead ends: 382 [2020-10-12 16:19:53,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2236 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1959, Invalid=5181, Unknown=0, NotChecked=0, Total=7140 [2020-10-12 16:19:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-12 16:19:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 295. [2020-10-12 16:19:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-12 16:19:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 369 transitions. [2020-10-12 16:19:53,131 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 369 transitions. Word has length 66 [2020-10-12 16:19:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:53,131 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 369 transitions. [2020-10-12 16:19:53,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 16:19:53,131 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 369 transitions. [2020-10-12 16:19:53,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 16:19:53,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:53,132 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:53,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 16:19:53,133 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:53,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1268609735, now seen corresponding path program 15 times [2020-10-12 16:19:53,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:53,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218915083] [2020-10-12 16:19:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:53,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:53,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 16:19:53,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 16:19:53,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 16:19:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 16:19:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:53,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:53,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:53,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:53,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:53,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:53,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:53,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:53,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:53,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:53,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:19:53,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:53,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:53,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:53,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218915083] [2020-10-12 16:19:53,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:53,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 16:19:53,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090233456] [2020-10-12 16:19:53,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 16:19:53,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:53,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 16:19:53,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-12 16:19:53,638 INFO L87 Difference]: Start difference. First operand 295 states and 369 transitions. Second operand 20 states. [2020-10-12 16:19:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:54,130 INFO L93 Difference]: Finished difference Result 623 states and 785 transitions. [2020-10-12 16:19:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 16:19:54,131 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-12 16:19:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:54,135 INFO L225 Difference]: With dead ends: 623 [2020-10-12 16:19:54,135 INFO L226 Difference]: Without dead ends: 340 [2020-10-12 16:19:54,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 16:19:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-12 16:19:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 315. [2020-10-12 16:19:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-12 16:19:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 393 transitions. [2020-10-12 16:19:54,166 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 393 transitions. Word has length 66 [2020-10-12 16:19:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:54,167 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 393 transitions. [2020-10-12 16:19:54,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 16:19:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 393 transitions. [2020-10-12 16:19:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 16:19:54,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:54,168 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:54,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 16:19:54,169 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1506928473, now seen corresponding path program 16 times [2020-10-12 16:19:54,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:54,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303386266] [2020-10-12 16:19:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:54,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:54,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 16:19:54,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:54,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-12 16:19:54,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 16:19:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 16:19:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:54,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:54,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:54,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:54,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:54,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:54,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:54,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:54,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:54,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303386266] [2020-10-12 16:19:54,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:54,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 16:19:54,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288571070] [2020-10-12 16:19:54,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 16:19:54,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:54,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 16:19:54,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-12 16:19:54,754 INFO L87 Difference]: Start difference. First operand 315 states and 393 transitions. Second operand 21 states. [2020-10-12 16:19:55,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:55,568 INFO L93 Difference]: Finished difference Result 668 states and 840 transitions. [2020-10-12 16:19:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 16:19:55,571 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2020-10-12 16:19:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:55,574 INFO L225 Difference]: With dead ends: 668 [2020-10-12 16:19:55,574 INFO L226 Difference]: Without dead ends: 365 [2020-10-12 16:19:55,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 16:19:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-12 16:19:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 338. [2020-10-12 16:19:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-12 16:19:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 421 transitions. [2020-10-12 16:19:55,601 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 421 transitions. Word has length 69 [2020-10-12 16:19:55,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:55,601 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 421 transitions. [2020-10-12 16:19:55,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 16:19:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 421 transitions. [2020-10-12 16:19:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 16:19:55,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:55,603 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:55,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 16:19:55,603 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:55,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:55,604 INFO L82 PathProgramCache]: Analyzing trace with hash -699678919, now seen corresponding path program 9 times [2020-10-12 16:19:55,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:55,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736547019] [2020-10-12 16:19:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:55,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:56,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:56,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 16:19:56,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:19:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-12 16:19:56,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 16:19:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 16:19:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:19:57,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:57,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:57,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:57,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:19:57,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:57,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:19:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:57,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:57,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:19:57,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:19:57,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:19:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:19:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:57,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736547019] [2020-10-12 16:19:57,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:19:57,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 16:19:57,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425805578] [2020-10-12 16:19:57,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 16:19:57,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:57,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 16:19:57,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-10-12 16:19:57,107 INFO L87 Difference]: Start difference. First operand 338 states and 421 transitions. Second operand 23 states. [2020-10-12 16:19:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:59,515 INFO L93 Difference]: Finished difference Result 756 states and 952 transitions. [2020-10-12 16:19:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-12 16:19:59,516 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2020-10-12 16:19:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:59,519 INFO L225 Difference]: With dead ends: 756 [2020-10-12 16:19:59,519 INFO L226 Difference]: Without dead ends: 430 [2020-10-12 16:19:59,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2455, Invalid=6475, Unknown=0, NotChecked=0, Total=8930 [2020-10-12 16:19:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-12 16:19:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2020-10-12 16:19:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-12 16:19:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 421 transitions. [2020-10-12 16:19:59,547 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 421 transitions. Word has length 72 [2020-10-12 16:19:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:59,548 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 421 transitions. [2020-10-12 16:19:59,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 16:19:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 421 transitions. [2020-10-12 16:19:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 16:19:59,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:59,549 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:59,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 16:19:59,549 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:59,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1679511943, now seen corresponding path program 17 times [2020-10-12 16:19:59,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:59,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089397755] [2020-10-12 16:19:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:59,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:59,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 16:19:59,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:19:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 16:19:59,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 16:19:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:19:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 16:19:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:00,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:00,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:00,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:20:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:00,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:00,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:00,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:00,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:00,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089397755] [2020-10-12 16:20:00,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:00,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 16:20:00,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568527098] [2020-10-12 16:20:00,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 16:20:00,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:00,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 16:20:00,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-12 16:20:00,120 INFO L87 Difference]: Start difference. First operand 337 states and 421 transitions. Second operand 22 states. [2020-10-12 16:20:00,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:00,894 INFO L93 Difference]: Finished difference Result 707 states and 889 transitions. [2020-10-12 16:20:00,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 16:20:00,895 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2020-10-12 16:20:00,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:00,898 INFO L225 Difference]: With dead ends: 707 [2020-10-12 16:20:00,898 INFO L226 Difference]: Without dead ends: 382 [2020-10-12 16:20:00,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=576, Invalid=1064, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 16:20:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-12 16:20:00,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 357. [2020-10-12 16:20:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-12 16:20:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 445 transitions. [2020-10-12 16:20:00,928 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 445 transitions. Word has length 72 [2020-10-12 16:20:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:00,928 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 445 transitions. [2020-10-12 16:20:00,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 16:20:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 445 transitions. [2020-10-12 16:20:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 16:20:00,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:00,930 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:00,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 16:20:00,930 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:00,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:00,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2037813401, now seen corresponding path program 18 times [2020-10-12 16:20:00,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:00,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479315789] [2020-10-12 16:20:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:01,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:01,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 16:20:01,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 16:20:01,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 16:20:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:20:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 16:20:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:01,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:01,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:01,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:01,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:01,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:20:01,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:01,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:01,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:01,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:01,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479315789] [2020-10-12 16:20:01,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:01,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 16:20:01,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196820620] [2020-10-12 16:20:01,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 16:20:01,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:01,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 16:20:01,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-10-12 16:20:01,563 INFO L87 Difference]: Start difference. First operand 357 states and 445 transitions. Second operand 23 states. [2020-10-12 16:20:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:02,377 INFO L93 Difference]: Finished difference Result 752 states and 944 transitions. [2020-10-12 16:20:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 16:20:02,377 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 75 [2020-10-12 16:20:02,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:02,380 INFO L225 Difference]: With dead ends: 752 [2020-10-12 16:20:02,380 INFO L226 Difference]: Without dead ends: 407 [2020-10-12 16:20:02,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=636, Invalid=1170, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 16:20:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-12 16:20:02,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 380. [2020-10-12 16:20:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-12 16:20:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 473 transitions. [2020-10-12 16:20:02,418 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 473 transitions. Word has length 75 [2020-10-12 16:20:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:02,418 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 473 transitions. [2020-10-12 16:20:02,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 16:20:02,418 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 473 transitions. [2020-10-12 16:20:02,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 16:20:02,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:02,420 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:02,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 16:20:02,420 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:02,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:02,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2071982201, now seen corresponding path program 10 times [2020-10-12 16:20:02,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:02,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31147340] [2020-10-12 16:20:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:02,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:03,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 16:20:03,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:20:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-12 16:20:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 16:20:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:20:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 16:20:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:03,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:03,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:03,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:03,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:20:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:03,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:03,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:03,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:03,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:03,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31147340] [2020-10-12 16:20:03,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:03,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 16:20:03,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37715812] [2020-10-12 16:20:03,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 16:20:03,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:03,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 16:20:03,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=382, Unknown=0, NotChecked=0, Total=600 [2020-10-12 16:20:03,948 INFO L87 Difference]: Start difference. First operand 380 states and 473 transitions. Second operand 25 states. [2020-10-12 16:20:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:06,697 INFO L93 Difference]: Finished difference Result 846 states and 1064 transitions. [2020-10-12 16:20:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-12 16:20:06,697 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 78 [2020-10-12 16:20:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:06,700 INFO L225 Difference]: With dead ends: 846 [2020-10-12 16:20:06,700 INFO L226 Difference]: Without dead ends: 478 [2020-10-12 16:20:06,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3554 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3007, Invalid=7913, Unknown=0, NotChecked=0, Total=10920 [2020-10-12 16:20:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-12 16:20:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 379. [2020-10-12 16:20:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-12 16:20:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 473 transitions. [2020-10-12 16:20:06,735 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 473 transitions. Word has length 78 [2020-10-12 16:20:06,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:06,735 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 473 transitions. [2020-10-12 16:20:06,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 16:20:06,736 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 473 transitions. [2020-10-12 16:20:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 16:20:06,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:06,737 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:06,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 16:20:06,738 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:06,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:06,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1092149177, now seen corresponding path program 19 times [2020-10-12 16:20:06,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:06,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832254585] [2020-10-12 16:20:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:06,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:06,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 16:20:06,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 16:20:06,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 16:20:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:20:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 16:20:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:07,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:07,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:07,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:07,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:07,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:20:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:07,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:07,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:07,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:07,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:07,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:07,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832254585] [2020-10-12 16:20:07,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:07,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 16:20:07,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909705551] [2020-10-12 16:20:07,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 16:20:07,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:07,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 16:20:07,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-10-12 16:20:07,348 INFO L87 Difference]: Start difference. First operand 379 states and 473 transitions. Second operand 24 states. [2020-10-12 16:20:08,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:08,247 INFO L93 Difference]: Finished difference Result 776 states and 973 transitions. [2020-10-12 16:20:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 16:20:08,253 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 78 [2020-10-12 16:20:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:08,255 INFO L225 Difference]: With dead ends: 776 [2020-10-12 16:20:08,255 INFO L226 Difference]: Without dead ends: 409 [2020-10-12 16:20:08,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=699, Invalid=1281, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 16:20:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-12 16:20:08,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 399. [2020-10-12 16:20:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-12 16:20:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 497 transitions. [2020-10-12 16:20:08,287 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 497 transitions. Word has length 78 [2020-10-12 16:20:08,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:08,288 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 497 transitions. [2020-10-12 16:20:08,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 16:20:08,288 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 497 transitions. [2020-10-12 16:20:08,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 16:20:08,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:08,289 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:08,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 16:20:08,290 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:08,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:08,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2067314215, now seen corresponding path program 20 times [2020-10-12 16:20:08,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:08,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252729165] [2020-10-12 16:20:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:08,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:08,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 16:20:08,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 16:20:08,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 16:20:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 16:20:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:08,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:08,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:08,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:08,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:08,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:20:08,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:08,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:08,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:08,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:08,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:08,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:08,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:08,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:08,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:08,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:08,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-12 16:20:08,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252729165] [2020-10-12 16:20:08,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:08,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 16:20:08,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953475126] [2020-10-12 16:20:08,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 16:20:08,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:08,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 16:20:08,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:20:08,376 INFO L87 Difference]: Start difference. First operand 399 states and 497 transitions. Second operand 4 states. [2020-10-12 16:20:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:08,470 INFO L93 Difference]: Finished difference Result 864 states and 1089 transitions. [2020-10-12 16:20:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 16:20:08,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-12 16:20:08,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:08,472 INFO L225 Difference]: With dead ends: 864 [2020-10-12 16:20:08,472 INFO L226 Difference]: Without dead ends: 477 [2020-10-12 16:20:08,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:20:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-12 16:20:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 404. [2020-10-12 16:20:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-12 16:20:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 504 transitions. [2020-10-12 16:20:08,513 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 504 transitions. Word has length 81 [2020-10-12 16:20:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:08,513 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 504 transitions. [2020-10-12 16:20:08,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 16:20:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 504 transitions. [2020-10-12 16:20:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 16:20:08,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:08,515 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:08,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 16:20:08,515 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:08,516 INFO L82 PathProgramCache]: Analyzing trace with hash -253663679, now seen corresponding path program 1 times [2020-10-12 16:20:08,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:08,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905187184] [2020-10-12 16:20:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:08,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:09,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:09,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 16:20:09,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:20:09,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-12 16:20:09,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:09,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 16:20:09,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:20:09,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 16:20:09,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:10,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:10,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:10,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:20:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:10,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:10,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:10,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:10,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:20:10,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:20:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:20:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 495 proven. 93 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 16:20:10,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905187184] [2020-10-12 16:20:10,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:10,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 16:20:10,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708747156] [2020-10-12 16:20:10,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 16:20:10,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:10,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 16:20:10,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=661, Unknown=0, NotChecked=0, Total=930 [2020-10-12 16:20:10,327 INFO L87 Difference]: Start difference. First operand 404 states and 504 transitions. Second operand 31 states. [2020-10-12 16:20:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:12,332 INFO L93 Difference]: Finished difference Result 2931 states and 3717 transitions. [2020-10-12 16:20:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 16:20:12,333 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 82 [2020-10-12 16:20:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:12,345 INFO L225 Difference]: With dead ends: 2931 [2020-10-12 16:20:12,345 INFO L226 Difference]: Without dead ends: 2530 [2020-10-12 16:20:12,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=910, Invalid=2630, Unknown=0, NotChecked=0, Total=3540 [2020-10-12 16:20:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2020-10-12 16:20:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2507. [2020-10-12 16:20:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2507 states. [2020-10-12 16:20:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3175 transitions. [2020-10-12 16:20:12,639 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3175 transitions. Word has length 82 [2020-10-12 16:20:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:12,640 INFO L479 AbstractCegarLoop]: Abstraction has 2507 states and 3175 transitions. [2020-10-12 16:20:12,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 16:20:12,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3175 transitions. [2020-10-12 16:20:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 16:20:12,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:12,645 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:12,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 16:20:12,645 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:12,645 INFO L82 PathProgramCache]: Analyzing trace with hash -255510721, now seen corresponding path program 1 times [2020-10-12 16:20:12,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:12,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646398448] [2020-10-12 16:20:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:14,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:17,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:17,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 16:20:17,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-12 16:20:17,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-12 16:20:17,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 16:20:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:20:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 16:20:17,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:17,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:17,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:17,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:17,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:17,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:17,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:17,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:17,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:17,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:17,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:20:17,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:17,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 210 proven. 296 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 16:20:17,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646398448] [2020-10-12 16:20:17,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:17,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 16:20:17,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508120105] [2020-10-12 16:20:17,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 16:20:17,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:17,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 16:20:17,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-10-12 16:20:17,946 INFO L87 Difference]: Start difference. First operand 2507 states and 3175 transitions. Second operand 18 states. [2020-10-12 16:20:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:19,066 INFO L93 Difference]: Finished difference Result 5827 states and 7365 transitions. [2020-10-12 16:20:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 16:20:19,067 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2020-10-12 16:20:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:19,090 INFO L225 Difference]: With dead ends: 5827 [2020-10-12 16:20:19,090 INFO L226 Difference]: Without dead ends: 5435 [2020-10-12 16:20:19,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=631, Invalid=1261, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 16:20:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5435 states. [2020-10-12 16:20:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5435 to 4976. [2020-10-12 16:20:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4976 states. [2020-10-12 16:20:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 6307 transitions. [2020-10-12 16:20:19,676 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 6307 transitions. Word has length 82 [2020-10-12 16:20:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:19,677 INFO L479 AbstractCegarLoop]: Abstraction has 4976 states and 6307 transitions. [2020-10-12 16:20:19,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 16:20:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 6307 transitions. [2020-10-12 16:20:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 16:20:19,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:19,681 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:19,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 16:20:19,681 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:19,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:19,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1939843517, now seen corresponding path program 2 times [2020-10-12 16:20:19,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:19,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589004463] [2020-10-12 16:20:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:20,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:20,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:20,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 16:20:20,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:20:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-12 16:20:20,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 16:20:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:20:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 16:20:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:21,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:21,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:21,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:21,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:20:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:21,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:21,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:21,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:21,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:21,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:21,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:21,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 532 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:21,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589004463] [2020-10-12 16:20:21,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:21,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 16:20:21,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663367715] [2020-10-12 16:20:21,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 16:20:21,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:21,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 16:20:21,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=582, Unknown=0, NotChecked=0, Total=870 [2020-10-12 16:20:21,050 INFO L87 Difference]: Start difference. First operand 4976 states and 6307 transitions. Second operand 30 states. [2020-10-12 16:20:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:23,591 INFO L93 Difference]: Finished difference Result 9524 states and 11925 transitions. [2020-10-12 16:20:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-12 16:20:23,592 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 82 [2020-10-12 16:20:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:23,601 INFO L225 Difference]: With dead ends: 9524 [2020-10-12 16:20:23,601 INFO L226 Difference]: Without dead ends: 2206 [2020-10-12 16:20:23,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1720, Invalid=4132, Unknown=0, NotChecked=0, Total=5852 [2020-10-12 16:20:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2020-10-12 16:20:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 832. [2020-10-12 16:20:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-10-12 16:20:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1011 transitions. [2020-10-12 16:20:23,699 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1011 transitions. Word has length 82 [2020-10-12 16:20:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:23,699 INFO L479 AbstractCegarLoop]: Abstraction has 832 states and 1011 transitions. [2020-10-12 16:20:23,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 16:20:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1011 transitions. [2020-10-12 16:20:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 16:20:23,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:23,701 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:23,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 16:20:23,701 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:23,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1183773891, now seen corresponding path program 1 times [2020-10-12 16:20:23,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:23,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469472875] [2020-10-12 16:20:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:27,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:28,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:28,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 16:20:28,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 16:20:28,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 16:20:28,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 16:20:28,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:20:28,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 16:20:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:29,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:29,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:29,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:29,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:29,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:29,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:29,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:29,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:29,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:20:29,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 532 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:29,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469472875] [2020-10-12 16:20:29,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:29,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 16:20:29,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415513040] [2020-10-12 16:20:29,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 16:20:29,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:29,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 16:20:29,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=410, Unknown=0, NotChecked=0, Total=650 [2020-10-12 16:20:29,168 INFO L87 Difference]: Start difference. First operand 832 states and 1011 transitions. Second operand 26 states. [2020-10-12 16:20:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:30,620 INFO L93 Difference]: Finished difference Result 1635 states and 1998 transitions. [2020-10-12 16:20:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-12 16:20:30,621 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 82 [2020-10-12 16:20:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:30,624 INFO L225 Difference]: With dead ends: 1635 [2020-10-12 16:20:30,624 INFO L226 Difference]: Without dead ends: 971 [2020-10-12 16:20:30,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1508, Invalid=3184, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 16:20:30,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-12 16:20:30,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 904. [2020-10-12 16:20:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-12 16:20:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1086 transitions. [2020-10-12 16:20:30,703 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1086 transitions. Word has length 82 [2020-10-12 16:20:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:30,704 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1086 transitions. [2020-10-12 16:20:30,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 16:20:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1086 transitions. [2020-10-12 16:20:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 16:20:30,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:30,706 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:30,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 16:20:30,706 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:30,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1895774088, now seen corresponding path program 1 times [2020-10-12 16:20:30,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:30,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955978858] [2020-10-12 16:20:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:35,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 16:20:35,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 16:20:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 16:20:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 16:20:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:20:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 16:20:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:36,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:36,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:36,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:36,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:36,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:36,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:36,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:36,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:36,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:36,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:20:36,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:20:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:36,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:36,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:36,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:36,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:36,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:36,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:36,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 535 proven. 1304 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-12 16:20:36,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955978858] [2020-10-12 16:20:36,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:36,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 16:20:36,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501436880] [2020-10-12 16:20:36,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 16:20:36,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:36,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 16:20:36,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2020-10-12 16:20:36,214 INFO L87 Difference]: Start difference. First operand 904 states and 1086 transitions. Second operand 27 states. [2020-10-12 16:20:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:37,957 INFO L93 Difference]: Finished difference Result 2116 states and 2603 transitions. [2020-10-12 16:20:37,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-12 16:20:37,958 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 153 [2020-10-12 16:20:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:37,963 INFO L225 Difference]: With dead ends: 2116 [2020-10-12 16:20:37,964 INFO L226 Difference]: Without dead ends: 1444 [2020-10-12 16:20:37,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1634, Invalid=3336, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 16:20:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-10-12 16:20:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1086. [2020-10-12 16:20:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2020-10-12 16:20:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1323 transitions. [2020-10-12 16:20:38,045 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1323 transitions. Word has length 153 [2020-10-12 16:20:38,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:38,046 INFO L479 AbstractCegarLoop]: Abstraction has 1086 states and 1323 transitions. [2020-10-12 16:20:38,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 16:20:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1323 transitions. [2020-10-12 16:20:38,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 16:20:38,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:38,049 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:38,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 16:20:38,049 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:38,049 INFO L82 PathProgramCache]: Analyzing trace with hash -816482525, now seen corresponding path program 2 times [2020-10-12 16:20:38,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:38,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124612259] [2020-10-12 16:20:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:40,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:40,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:42,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:43,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 16:20:43,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-12 16:20:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 16:20:43,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:43,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 16:20:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:20:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-12 16:20:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:43,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:43,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:43,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:43,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:43,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:43,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:43,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:43,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:43,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:43,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:43,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:43,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:20:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:43,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:43,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:20:43,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:20:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:20:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:20:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:43,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:43,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:43,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:43,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:20:43,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 596 proven. 3742 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2020-10-12 16:20:43,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124612259] [2020-10-12 16:20:43,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:43,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 16:20:43,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011594328] [2020-10-12 16:20:43,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 16:20:43,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:43,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 16:20:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=600, Unknown=0, NotChecked=0, Total=870 [2020-10-12 16:20:43,986 INFO L87 Difference]: Start difference. First operand 1086 states and 1323 transitions. Second operand 30 states. [2020-10-12 16:20:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:45,882 INFO L93 Difference]: Finished difference Result 2147 states and 2623 transitions. [2020-10-12 16:20:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-12 16:20:45,883 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 224 [2020-10-12 16:20:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:45,888 INFO L225 Difference]: With dead ends: 2147 [2020-10-12 16:20:45,888 INFO L226 Difference]: Without dead ends: 1294 [2020-10-12 16:20:45,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1702, Invalid=4304, Unknown=0, NotChecked=0, Total=6006 [2020-10-12 16:20:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-10-12 16:20:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1158. [2020-10-12 16:20:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-10-12 16:20:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1398 transitions. [2020-10-12 16:20:45,975 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1398 transitions. Word has length 224 [2020-10-12 16:20:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:45,976 INFO L479 AbstractCegarLoop]: Abstraction has 1158 states and 1398 transitions. [2020-10-12 16:20:45,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 16:20:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1398 transitions. [2020-10-12 16:20:45,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-12 16:20:45,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:45,978 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 80, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:45,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 16:20:45,979 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:45,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:45,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1218979304, now seen corresponding path program 3 times [2020-10-12 16:20:45,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:45,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720586962] [2020-10-12 16:20:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:51,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:51,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-12 16:20:51,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 16:20:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 16:20:51,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 16:20:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:20:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-12 16:20:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:51,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:51,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:51,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:51,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:51,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:20:51,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:51,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:20:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:51,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:51,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:51,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:20:51,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:51,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:20:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:51,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:51,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:51,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:51,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:51,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:51,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:51,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:51,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:51,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:20:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:51,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:51,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:51,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:51,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:51,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:20:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:51,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:51,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:20:51,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:51,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:20:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:20:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9860 backedges. 541 proven. 7537 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2020-10-12 16:20:51,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720586962] [2020-10-12 16:20:51,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:51,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 16:20:51,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456741236] [2020-10-12 16:20:51,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 16:20:51,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 16:20:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=560, Unknown=0, NotChecked=0, Total=812 [2020-10-12 16:20:51,720 INFO L87 Difference]: Start difference. First operand 1158 states and 1398 transitions. Second operand 29 states. [2020-10-12 16:20:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:54,441 INFO L93 Difference]: Finished difference Result 2281 states and 2761 transitions. [2020-10-12 16:20:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-10-12 16:20:54,442 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 295 [2020-10-12 16:20:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:54,447 INFO L225 Difference]: With dead ends: 2281 [2020-10-12 16:20:54,447 INFO L226 Difference]: Without dead ends: 1428 [2020-10-12 16:20:54,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3515 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3438, Invalid=9444, Unknown=0, NotChecked=0, Total=12882 [2020-10-12 16:20:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2020-10-12 16:20:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1230. [2020-10-12 16:20:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2020-10-12 16:20:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1473 transitions. [2020-10-12 16:20:54,539 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1473 transitions. Word has length 295 [2020-10-12 16:20:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:54,539 INFO L479 AbstractCegarLoop]: Abstraction has 1230 states and 1473 transitions. [2020-10-12 16:20:54,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 16:20:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1473 transitions. [2020-10-12 16:20:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-12 16:20:54,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:54,542 INFO L422 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:54,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 16:20:54,542 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2083368573, now seen corresponding path program 4 times [2020-10-12 16:20:54,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:54,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528698011] [2020-10-12 16:20:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:54,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:59,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:59,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-12 16:20:59,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 16:20:59,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 16:20:59,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 16:20:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:20:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 359 [2020-10-12 16:20:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:00,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:00,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:00,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:00,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:21:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:00,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:00,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:21:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:00,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:00,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:00,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:00,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:00,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:21:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:00,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:00,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:00,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:00,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:00,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:00,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:00,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:00,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:00,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:21:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:00,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:00,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:00,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:00,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:00,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:00,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:00,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:00,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:00,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:00,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:21:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:00,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:00,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:00,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 15452 backedges. 544 proven. 12524 refuted. 0 times theorem prover too weak. 2384 trivial. 0 not checked. [2020-10-12 16:21:00,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528698011] [2020-10-12 16:21:00,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:00,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 16:21:00,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128011021] [2020-10-12 16:21:00,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 16:21:00,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:00,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 16:21:00,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2020-10-12 16:21:00,266 INFO L87 Difference]: Start difference. First operand 1230 states and 1473 transitions. Second operand 30 states. [2020-10-12 16:21:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:04,144 INFO L93 Difference]: Finished difference Result 2408 states and 2892 transitions. [2020-10-12 16:21:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2020-10-12 16:21:04,145 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 366 [2020-10-12 16:21:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:04,150 INFO L225 Difference]: With dead ends: 2408 [2020-10-12 16:21:04,150 INFO L226 Difference]: Without dead ends: 1555 [2020-10-12 16:21:04,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7845 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5696, Invalid=16954, Unknown=0, NotChecked=0, Total=22650 [2020-10-12 16:21:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2020-10-12 16:21:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1302. [2020-10-12 16:21:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1302 states. [2020-10-12 16:21:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1548 transitions. [2020-10-12 16:21:04,244 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1548 transitions. Word has length 366 [2020-10-12 16:21:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:04,245 INFO L479 AbstractCegarLoop]: Abstraction has 1302 states and 1548 transitions. [2020-10-12 16:21:04,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 16:21:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1548 transitions. [2020-10-12 16:21:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-12 16:21:04,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:04,249 INFO L422 BasicCegarLoop]: trace histogram [120, 120, 120, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:04,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 16:21:04,249 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1721396296, now seen corresponding path program 5 times [2020-10-12 16:21:04,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:04,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729678352] [2020-10-12 16:21:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:04,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:05,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:05,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:05,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:07,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:09,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:09,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-12 16:21:09,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 16:21:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 16:21:09,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 16:21:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:21:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 432 [2020-10-12 16:21:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:09,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:09,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:09,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:09,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:09,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:09,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:09,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:21:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:09,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:09,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:09,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:09,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:09,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:09,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:21:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:09,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:09,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:09,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:09,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:09,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:09,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:21:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:09,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:09,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:09,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:09,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:09,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:21:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:09,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:09,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:09,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:09,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:09,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:09,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:09,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:21:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:21:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:09,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:09,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:09,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:21:09,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22295 backedges. 547 proven. 18758 refuted. 0 times theorem prover too weak. 2990 trivial. 0 not checked. [2020-10-12 16:21:10,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729678352] [2020-10-12 16:21:10,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:10,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 16:21:10,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998252194] [2020-10-12 16:21:10,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 16:21:10,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:10,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 16:21:10,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-10-12 16:21:10,155 INFO L87 Difference]: Start difference. First operand 1302 states and 1548 transitions. Second operand 31 states. [2020-10-12 16:21:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:12,339 INFO L93 Difference]: Finished difference Result 2367 states and 2852 transitions. [2020-10-12 16:21:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-12 16:21:12,340 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 437 [2020-10-12 16:21:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:12,347 INFO L225 Difference]: With dead ends: 2367 [2020-10-12 16:21:12,347 INFO L226 Difference]: Without dead ends: 1514 [2020-10-12 16:21:12,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2108, Invalid=4864, Unknown=0, NotChecked=0, Total=6972 [2020-10-12 16:21:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-10-12 16:21:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1374. [2020-10-12 16:21:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-12 16:21:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1623 transitions. [2020-10-12 16:21:12,444 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1623 transitions. Word has length 437 [2020-10-12 16:21:12,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:12,445 INFO L479 AbstractCegarLoop]: Abstraction has 1374 states and 1623 transitions. [2020-10-12 16:21:12,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 16:21:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1623 transitions. [2020-10-12 16:21:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-12 16:21:12,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:12,449 INFO L422 BasicCegarLoop]: trace histogram [140, 140, 140, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:12,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 16:21:12,449 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:12,450 INFO L82 PathProgramCache]: Analyzing trace with hash -57965597, now seen corresponding path program 6 times [2020-10-12 16:21:12,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:12,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828364389] [2020-10-12 16:21:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:12,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:15,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:16,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:17,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-12 16:21:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 16:21:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-12 16:21:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 16:21:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:21:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 505 [2020-10-12 16:21:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:18,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:18,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:18,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:18,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:18,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:21:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:18,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:18,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:18,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:18,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:21:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:18,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:18,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:18,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:18,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:18,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:21:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:18,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:18,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:21:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:18,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:18,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:18,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:21:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:18,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:18,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:18,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:18,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:18,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:18,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:21:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:18,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:18,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:18,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:18,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:21:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:18,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:18,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:18,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:18,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 30389 backedges. 550 proven. 26239 refuted. 0 times theorem prover too weak. 3600 trivial. 0 not checked. [2020-10-12 16:21:18,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828364389] [2020-10-12 16:21:18,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:18,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 16:21:18,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053311092] [2020-10-12 16:21:18,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 16:21:18,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:18,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 16:21:18,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2020-10-12 16:21:18,461 INFO L87 Difference]: Start difference. First operand 1374 states and 1623 transitions. Second operand 32 states. [2020-10-12 16:21:21,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:21,919 INFO L93 Difference]: Finished difference Result 2497 states and 2986 transitions. [2020-10-12 16:21:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-12 16:21:21,920 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 508 [2020-10-12 16:21:21,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:21,926 INFO L225 Difference]: With dead ends: 2497 [2020-10-12 16:21:21,927 INFO L226 Difference]: Without dead ends: 1644 [2020-10-12 16:21:21,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4069 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3969, Invalid=11037, Unknown=0, NotChecked=0, Total=15006 [2020-10-12 16:21:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2020-10-12 16:21:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1446. [2020-10-12 16:21:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1446 states. [2020-10-12 16:21:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1698 transitions. [2020-10-12 16:21:22,016 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1698 transitions. Word has length 508 [2020-10-12 16:21:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:22,017 INFO L479 AbstractCegarLoop]: Abstraction has 1446 states and 1698 transitions. [2020-10-12 16:21:22,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 16:21:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1698 transitions. [2020-10-12 16:21:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-12 16:21:22,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:22,022 INFO L422 BasicCegarLoop]: trace histogram [160, 160, 160, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:22,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 16:21:22,023 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:22,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1239676248, now seen corresponding path program 7 times [2020-10-12 16:21:22,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:22,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175175490] [2020-10-12 16:21:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:22,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:23,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:24,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-10-12 16:21:27,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 16:21:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 16:21:27,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 16:21:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:21:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 578 [2020-10-12 16:21:27,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:21:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:27,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:27,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:21:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:27,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:27,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:21:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:27,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:27,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:21:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:27,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:27,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:21:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:27,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:21:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:27,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:27,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:21:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:27,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:27,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:27,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 16:21:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:27,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:27,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:27,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:27,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 39734 backedges. 553 proven. 34967 refuted. 0 times theorem prover too weak. 4214 trivial. 0 not checked. [2020-10-12 16:21:28,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175175490] [2020-10-12 16:21:28,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:28,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 16:21:28,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355431662] [2020-10-12 16:21:28,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 16:21:28,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:28,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 16:21:28,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 16:21:28,182 INFO L87 Difference]: Start difference. First operand 1446 states and 1698 transitions. Second operand 33 states. [2020-10-12 16:21:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:30,677 INFO L93 Difference]: Finished difference Result 2511 states and 3002 transitions. [2020-10-12 16:21:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-12 16:21:30,678 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 579 [2020-10-12 16:21:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:30,684 INFO L225 Difference]: With dead ends: 2511 [2020-10-12 16:21:30,684 INFO L226 Difference]: Without dead ends: 1658 [2020-10-12 16:21:30,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2404, Invalid=5606, Unknown=0, NotChecked=0, Total=8010 [2020-10-12 16:21:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-10-12 16:21:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1518. [2020-10-12 16:21:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1518 states. [2020-10-12 16:21:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 1773 transitions. [2020-10-12 16:21:30,774 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 1773 transitions. Word has length 579 [2020-10-12 16:21:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:30,775 INFO L479 AbstractCegarLoop]: Abstraction has 1518 states and 1773 transitions. [2020-10-12 16:21:30,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 16:21:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 1773 transitions. [2020-10-12 16:21:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2020-10-12 16:21:30,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:30,781 INFO L422 BasicCegarLoop]: trace histogram [180, 180, 180, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:30,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 16:21:30,781 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:30,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:30,782 INFO L82 PathProgramCache]: Analyzing trace with hash 260509251, now seen corresponding path program 8 times [2020-10-12 16:21:30,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:30,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132598637] [2020-10-12 16:21:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:32,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:32,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:35,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:35,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 676 [2020-10-12 16:21:35,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 16:21:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 16:21:35,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 16:21:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:21:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 651 [2020-10-12 16:21:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:36,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:36,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:21:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:36,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:21:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:36,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:21:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:21:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:36,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:36,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:21:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:36,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:21:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:36,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:36,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:21:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 16:21:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:21:36,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-12 16:21:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:36,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:36,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:36,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:36,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 50330 backedges. 556 proven. 44942 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2020-10-12 16:21:37,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132598637] [2020-10-12 16:21:37,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:37,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 16:21:37,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880141435] [2020-10-12 16:21:37,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 16:21:37,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:37,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 16:21:37,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 16:21:37,129 INFO L87 Difference]: Start difference. First operand 1518 states and 1773 transitions. Second operand 34 states. [2020-10-12 16:21:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:39,807 INFO L93 Difference]: Finished difference Result 2583 states and 3077 transitions. [2020-10-12 16:21:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-12 16:21:39,808 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 650 [2020-10-12 16:21:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:39,819 INFO L225 Difference]: With dead ends: 2583 [2020-10-12 16:21:39,819 INFO L226 Difference]: Without dead ends: 1730 [2020-10-12 16:21:39,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1620 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2564, Invalid=5992, Unknown=0, NotChecked=0, Total=8556 [2020-10-12 16:21:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2020-10-12 16:21:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1590. [2020-10-12 16:21:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-10-12 16:21:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 1848 transitions. [2020-10-12 16:21:39,948 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 1848 transitions. Word has length 650 [2020-10-12 16:21:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:39,949 INFO L479 AbstractCegarLoop]: Abstraction has 1590 states and 1848 transitions. [2020-10-12 16:21:39,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 16:21:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 1848 transitions. [2020-10-12 16:21:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2020-10-12 16:21:39,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:39,955 INFO L422 BasicCegarLoop]: trace histogram [200, 200, 200, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:39,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 16:21:39,956 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:39,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1879899896, now seen corresponding path program 9 times [2020-10-12 16:21:39,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:39,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775480800] [2020-10-12 16:21:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-12 16:21:45,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 16:21:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-12 16:21:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 16:21:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:21:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 724 [2020-10-12 16:21:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:45,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:21:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:45,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:45,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:45,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:21:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:21:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:21:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:21:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:21:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:21:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 16:21:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-12 16:21:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:45,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-12 16:21:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:45,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:45,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:45,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:45,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 62177 backedges. 559 proven. 56164 refuted. 0 times theorem prover too weak. 5454 trivial. 0 not checked. [2020-10-12 16:21:46,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775480800] [2020-10-12 16:21:46,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:46,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 16:21:46,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192083846] [2020-10-12 16:21:46,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 16:21:46,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:46,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 16:21:46,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 16:21:46,480 INFO L87 Difference]: Start difference. First operand 1590 states and 1848 transitions. Second operand 35 states. [2020-10-12 16:21:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:21:50,138 INFO L93 Difference]: Finished difference Result 2713 states and 3211 transitions. [2020-10-12 16:21:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2020-10-12 16:21:50,139 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 721 [2020-10-12 16:21:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:21:50,143 INFO L225 Difference]: With dead ends: 2713 [2020-10-12 16:21:50,143 INFO L226 Difference]: Without dead ends: 1860 [2020-10-12 16:21:50,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4772 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4590, Invalid=12702, Unknown=0, NotChecked=0, Total=17292 [2020-10-12 16:21:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2020-10-12 16:21:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1662. [2020-10-12 16:21:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2020-10-12 16:21:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 1923 transitions. [2020-10-12 16:21:50,240 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 1923 transitions. Word has length 721 [2020-10-12 16:21:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:21:50,240 INFO L479 AbstractCegarLoop]: Abstraction has 1662 states and 1923 transitions. [2020-10-12 16:21:50,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 16:21:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 1923 transitions. [2020-10-12 16:21:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2020-10-12 16:21:50,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:21:50,247 INFO L422 BasicCegarLoop]: trace histogram [220, 220, 220, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:21:50,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 16:21:50,247 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:21:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:21:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash 810217635, now seen corresponding path program 10 times [2020-10-12 16:21:50,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:21:50,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061304691] [2020-10-12 16:21:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:21:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:50,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:51,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:54,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:55,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-12 16:21:55,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 16:21:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 16:21:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 16:21:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:21:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 797 [2020-10-12 16:21:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:21:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:21:56,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:21:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:21:56,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:21:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:21:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:21:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:21:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:21:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:21:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:21:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:21:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 16:21:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-12 16:21:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-12 16:21:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-12 16:21:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:21:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:21:56,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:21:56,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:21:56,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:21:56,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:21:56,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:21:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:21:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:21:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:21:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:21:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 75275 backedges. 562 proven. 68633 refuted. 0 times theorem prover too weak. 6080 trivial. 0 not checked. [2020-10-12 16:21:56,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061304691] [2020-10-12 16:21:56,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:21:56,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 16:21:56,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856669335] [2020-10-12 16:21:56,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 16:21:56,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:21:56,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 16:21:56,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 16:21:56,784 INFO L87 Difference]: Start difference. First operand 1662 states and 1923 transitions. Second operand 36 states. [2020-10-12 16:22:03,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:22:03,754 INFO L93 Difference]: Finished difference Result 2941 states and 3445 transitions. [2020-10-12 16:22:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2020-10-12 16:22:03,755 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 792 [2020-10-12 16:22:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:22:03,760 INFO L225 Difference]: With dead ends: 2941 [2020-10-12 16:22:03,760 INFO L226 Difference]: Without dead ends: 2088 [2020-10-12 16:22:03,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22426 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=12848, Invalid=40282, Unknown=0, NotChecked=0, Total=53130 [2020-10-12 16:22:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2020-10-12 16:22:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1734. [2020-10-12 16:22:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1734 states. [2020-10-12 16:22:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 1998 transitions. [2020-10-12 16:22:03,847 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 1998 transitions. Word has length 792 [2020-10-12 16:22:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:22:03,848 INFO L479 AbstractCegarLoop]: Abstraction has 1734 states and 1998 transitions. [2020-10-12 16:22:03,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 16:22:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 1998 transitions. [2020-10-12 16:22:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-10-12 16:22:03,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:22:03,855 INFO L422 BasicCegarLoop]: trace histogram [240, 240, 240, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:22:03,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 16:22:03,855 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:22:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:22:03,856 INFO L82 PathProgramCache]: Analyzing trace with hash -442847080, now seen corresponding path program 11 times [2020-10-12 16:22:03,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:22:03,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300265479] [2020-10-12 16:22:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:22:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:06,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-12 16:22:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 16:22:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 16:22:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 16:22:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:22:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 870 [2020-10-12 16:22:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:22:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:22:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:22:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:22:09,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:22:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:22:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:22:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:22:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:22:09,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:22:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:22:09,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:22:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:22:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 16:22:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-12 16:22:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-12 16:22:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-12 16:22:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:09,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-12 16:22:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:09,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:09,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:09,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:09,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 89624 backedges. 632 proven. 82312 refuted. 0 times theorem prover too weak. 6680 trivial. 0 not checked. [2020-10-12 16:22:10,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300265479] [2020-10-12 16:22:10,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:22:10,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 16:22:10,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904528568] [2020-10-12 16:22:10,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 16:22:10,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:22:10,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 16:22:10,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 16:22:10,663 INFO L87 Difference]: Start difference. First operand 1734 states and 1998 transitions. Second operand 39 states. [2020-10-12 16:22:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:22:15,782 INFO L93 Difference]: Finished difference Result 2795 states and 3301 transitions. [2020-10-12 16:22:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-12 16:22:15,783 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 863 [2020-10-12 16:22:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:22:15,787 INFO L225 Difference]: With dead ends: 2795 [2020-10-12 16:22:15,788 INFO L226 Difference]: Without dead ends: 1942 [2020-10-12 16:22:15,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8200 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6045, Invalid=18135, Unknown=0, NotChecked=0, Total=24180 [2020-10-12 16:22:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2020-10-12 16:22:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1806. [2020-10-12 16:22:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1806 states. [2020-10-12 16:22:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2073 transitions. [2020-10-12 16:22:15,905 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2073 transitions. Word has length 863 [2020-10-12 16:22:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:22:15,906 INFO L479 AbstractCegarLoop]: Abstraction has 1806 states and 2073 transitions. [2020-10-12 16:22:15,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 16:22:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2073 transitions. [2020-10-12 16:22:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-10-12 16:22:15,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:22:15,913 INFO L422 BasicCegarLoop]: trace histogram [260, 260, 260, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:22:15,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 16:22:15,914 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:22:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:22:15,914 INFO L82 PathProgramCache]: Analyzing trace with hash -807589117, now seen corresponding path program 12 times [2020-10-12 16:22:15,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:22:15,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352965709] [2020-10-12 16:22:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:22:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:17,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:18,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 968 [2020-10-12 16:22:21,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 16:22:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 16:22:21,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 16:22:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:22:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 943 [2020-10-12 16:22:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:22:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:22:22,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:22:22,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:22:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:22:22,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:22:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:22:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:22:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:22:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:22:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:22:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 16:22:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-12 16:22:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-12 16:22:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-12 16:22:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-12 16:22:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-12 16:22:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:22,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:22,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:22,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:22,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:22,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:22,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 105224 backedges. 568 proven. 97312 refuted. 0 times theorem prover too weak. 7344 trivial. 0 not checked. [2020-10-12 16:22:23,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352965709] [2020-10-12 16:22:23,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:22:23,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 16:22:23,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527415449] [2020-10-12 16:22:23,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 16:22:23,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:22:23,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 16:22:23,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 16:22:23,298 INFO L87 Difference]: Start difference. First operand 1806 states and 2073 transitions. Second operand 38 states. [2020-10-12 16:22:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:22:27,029 INFO L93 Difference]: Finished difference Result 2871 states and 3377 transitions. [2020-10-12 16:22:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-12 16:22:27,030 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 934 [2020-10-12 16:22:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:22:27,034 INFO L225 Difference]: With dead ends: 2871 [2020-10-12 16:22:27,034 INFO L226 Difference]: Without dead ends: 2018 [2020-10-12 16:22:27,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2242 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3284, Invalid=7636, Unknown=0, NotChecked=0, Total=10920 [2020-10-12 16:22:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2020-10-12 16:22:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1878. [2020-10-12 16:22:27,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-10-12 16:22:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2148 transitions. [2020-10-12 16:22:27,194 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2148 transitions. Word has length 934 [2020-10-12 16:22:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:22:27,195 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2148 transitions. [2020-10-12 16:22:27,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 16:22:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2148 transitions. [2020-10-12 16:22:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-12 16:22:27,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:22:27,208 INFO L422 BasicCegarLoop]: trace histogram [280, 280, 280, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:22:27,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 16:22:27,208 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:22:27,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:22:27,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1455884856, now seen corresponding path program 13 times [2020-10-12 16:22:27,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:22:27,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336203647] [2020-10-12 16:22:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:22:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:28,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:30,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:32,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:32,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1041 [2020-10-12 16:22:32,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 16:22:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 16:22:32,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 16:22:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:22:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1016 [2020-10-12 16:22:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:22:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:22:33,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:22:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:22:33,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:33,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:33,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:22:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:22:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:22:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:22:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:22:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:22:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 16:22:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-12 16:22:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-12 16:22:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-12 16:22:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-12 16:22:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-12 16:22:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-12 16:22:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:33,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:33,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:33,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:33,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 122075 backedges. 571 proven. 113522 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2020-10-12 16:22:34,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336203647] [2020-10-12 16:22:34,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:22:34,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 16:22:34,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983270389] [2020-10-12 16:22:34,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 16:22:34,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:22:34,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 16:22:34,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1160, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 16:22:34,422 INFO L87 Difference]: Start difference. First operand 1878 states and 2148 transitions. Second operand 39 states. [2020-10-12 16:22:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:22:47,568 INFO L93 Difference]: Finished difference Result 3323 states and 3840 transitions. [2020-10-12 16:22:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2020-10-12 16:22:47,569 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 1005 [2020-10-12 16:22:47,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:22:47,575 INFO L225 Difference]: With dead ends: 3323 [2020-10-12 16:22:47,576 INFO L226 Difference]: Without dead ends: 2470 [2020-10-12 16:22:47,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57761 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=28196, Invalid=87064, Unknown=0, NotChecked=0, Total=115260 [2020-10-12 16:22:47,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2020-10-12 16:22:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1950. [2020-10-12 16:22:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-10-12 16:22:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2223 transitions. [2020-10-12 16:22:47,760 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2223 transitions. Word has length 1005 [2020-10-12 16:22:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:22:47,761 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2223 transitions. [2020-10-12 16:22:47,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 16:22:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2223 transitions. [2020-10-12 16:22:47,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-12 16:22:47,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:22:47,778 INFO L422 BasicCegarLoop]: trace histogram [300, 300, 300, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:22:47,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 16:22:47,779 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:22:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:22:47,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1128022685, now seen corresponding path program 14 times [2020-10-12 16:22:47,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:22:47,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30240312] [2020-10-12 16:22:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:22:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:48,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:51,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:53,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:53,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1114 [2020-10-12 16:22:53,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 16:22:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 16:22:53,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 16:22:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 16:22:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1089 [2020-10-12 16:22:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:22:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:22:54,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:22:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:22:54,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:22:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:22:54,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 16:22:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 16:22:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 16:22:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-12 16:22:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 16:22:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-12 16:22:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 16:22:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-12 16:22:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-12 16:22:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-12 16:22:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-12 16:22:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-12 16:22:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:22:54,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-12 16:22:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:22:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:54,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1001 [2020-10-12 16:22:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:22:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:22:54,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:22:54,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:22:54,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:22:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:22:54,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:22:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:22:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:22:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:22:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:22:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 140177 backedges. 574 proven. 130979 refuted. 0 times theorem prover too weak. 8624 trivial. 0 not checked. [2020-10-12 16:22:55,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30240312] [2020-10-12 16:22:55,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:22:55,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-12 16:22:55,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560597937] [2020-10-12 16:22:55,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-12 16:22:55,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:22:55,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-12 16:22:55,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1223, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 16:22:55,415 INFO L87 Difference]: Start difference. First operand 1950 states and 2223 transitions. Second operand 40 states. [2020-10-12 16:23:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:05,346 INFO L93 Difference]: Finished difference Result 3275 states and 3792 transitions. [2020-10-12 16:23:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2020-10-12 16:23:05,347 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1076 [2020-10-12 16:23:05,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:05,353 INFO L225 Difference]: With dead ends: 3275 [2020-10-12 16:23:05,354 INFO L226 Difference]: Without dead ends: 2422 [2020-10-12 16:23:05,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32342 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=17767, Invalid=55403, Unknown=0, NotChecked=0, Total=73170 [2020-10-12 16:23:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2020-10-12 16:23:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2022. [2020-10-12 16:23:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2022 states. [2020-10-12 16:23:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2298 transitions. [2020-10-12 16:23:05,535 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2298 transitions. Word has length 1076 [2020-10-12 16:23:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:05,541 INFO L479 AbstractCegarLoop]: Abstraction has 2022 states and 2298 transitions. [2020-10-12 16:23:05,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-12 16:23:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2298 transitions. [2020-10-12 16:23:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2020-10-12 16:23:05,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:05,559 INFO L422 BasicCegarLoop]: trace histogram [320, 320, 320, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:05,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 16:23:05,559 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:05,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:05,560 INFO L82 PathProgramCache]: Analyzing trace with hash -498332712, now seen corresponding path program 15 times [2020-10-12 16:23:05,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:05,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358406294] [2020-10-12 16:23:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:06,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking...