/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/reducercommutativity/sum10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:31:07,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:31:07,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:31:07,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:31:07,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:31:07,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:31:07,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:31:07,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:31:07,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:31:07,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:31:07,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:31:07,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:31:07,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:31:07,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:31:07,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:31:07,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:31:07,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:31:07,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:31:07,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:31:07,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:31:07,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:31:07,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:31:07,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:31:07,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:31:07,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:31:07,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:31:07,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:31:07,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:31:07,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:31:07,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:31:07,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:31:07,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:31:07,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:31:07,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:31:07,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:31:07,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:31:07,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:31:07,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:31:07,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:31:07,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:31:07,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:31:07,711 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 18:31:07,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:31:07,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:31:07,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:31:07,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:31:07,762 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:31:07,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:31:07,763 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:31:07,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:31:07,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:31:07,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:31:07,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:31:07,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:31:07,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:31:07,766 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:31:07,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:31:07,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:31:07,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:31:07,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:31:07,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:31:07,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:31:07,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:31:07,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:31:07,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:31:07,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:31:07,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:31:07,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:31:07,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:31:07,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:31:07,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:31:07,770 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 18:31:08,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:31:08,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:31:08,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:31:08,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:31:08,120 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:31:08,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum10-1.i [2020-10-12 18:31:08,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a05d56e/f59efe08428547749b11171cf5e6e8a7/FLAG86806e0c3 [2020-10-12 18:31:08,756 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:31:08,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum10-1.i [2020-10-12 18:31:08,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a05d56e/f59efe08428547749b11171cf5e6e8a7/FLAG86806e0c3 [2020-10-12 18:31:09,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a05d56e/f59efe08428547749b11171cf5e6e8a7 [2020-10-12 18:31:09,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:31:09,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:31:09,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:31:09,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:31:09,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:31:09,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87e4b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09, skipping insertion in model container [2020-10-12 18:31:09,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:31:09,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:31:09,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:31:09,390 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:31:09,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:31:09,434 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:31:09,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09 WrapperNode [2020-10-12 18:31:09,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:31:09,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:31:09,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:31:09,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:31:09,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (1/1) ... [2020-10-12 18:31:09,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:31:09,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:31:09,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:31:09,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:31:09,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (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 18:31:09,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:31:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:31:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-12 18:31:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:31:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:31:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:31:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-12 18:31:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:31:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:31:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:31:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:31:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:31:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:31:09,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:31:09,969 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:31:09,970 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:31:09,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:31:09 BoogieIcfgContainer [2020-10-12 18:31:09,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:31:09,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:31:09,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:31:09,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:31:09,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:31:09" (1/3) ... [2020-10-12 18:31:09,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73761a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:31:09, skipping insertion in model container [2020-10-12 18:31:09,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:09" (2/3) ... [2020-10-12 18:31:09,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73761a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:31:09, skipping insertion in model container [2020-10-12 18:31:09,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:31:09" (3/3) ... [2020-10-12 18:31:09,987 INFO L109 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2020-10-12 18:31:10,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:31:10,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:31:10,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:31:10,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:31:10,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:31:10,089 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:31:10,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:31:10,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:31:10,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:31:10,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:31:10,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:31:10,122 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 18:31:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:31:10,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:10,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:10,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-12 18:31:10,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:10,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370853487] [2020-10-12 18:31:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:11,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:11,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:31:11,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:31:11,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-12 18:31:11,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:31:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 18:31:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:11,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:11,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:11,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:11,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:31:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:11,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:31:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:11,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:11,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:31:11,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 18:31:11,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:31:12,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:31:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:31:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:31:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:12,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:31:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:12,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:31:12,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 18:31:12,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:31:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:31:12,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370853487] [2020-10-12 18:31:12,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:31:12,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:31:12,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124633574] [2020-10-12 18:31:12,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:31:12,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:12,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:31:12,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:31:12,392 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-12 18:31:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:12,749 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-12 18:31:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:31:12,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:31:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:12,766 INFO L225 Difference]: With dead ends: 83 [2020-10-12 18:31:12,766 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 18:31:12,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:31:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 18:31:12,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-12 18:31:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:31:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-12 18:31:12,844 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-12 18:31:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:12,845 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-12 18:31:12,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:31:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-12 18:31:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 18:31:12,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:12,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 18:31:12,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:31:12,850 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:12,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:12,851 INFO L82 PathProgramCache]: Analyzing trace with hash -222611607, now seen corresponding path program 1 times [2020-10-12 18:31:12,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:12,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524282925] [2020-10-12 18:31:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:14,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:31:14,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:31:14,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1466 [2020-10-12 18:31:14,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:14,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:31:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:31:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:31:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:14,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:14,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:14,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:14,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:14,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:31:14,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:14,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:31:14,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:14,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:31:14,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:14,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:31:14,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:14,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:31:14,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:31:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:14,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:14,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:31:14,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:31:14,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:31:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:31:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:31:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:14,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:14,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:31:14,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:31:14,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:31:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:31:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:31:14,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524282925] [2020-10-12 18:31:14,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:14,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:31:14,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714822309] [2020-10-12 18:31:14,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:31:14,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:14,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:31:14,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:31:14,459 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-12 18:31:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:14,574 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-12 18:31:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:31:14,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 18:31:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:14,576 INFO L225 Difference]: With dead ends: 58 [2020-10-12 18:31:14,576 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 18:31:14,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:31:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 18:31:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 18:31:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 18:31:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 18:31:14,587 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-12 18:31:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:14,588 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 18:31:14,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:31:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 18:31:14,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 18:31:14,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:14,591 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:14,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:31:14,591 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:14,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1311690489, now seen corresponding path program 2 times [2020-10-12 18:31:14,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:14,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388488539] [2020-10-12 18:31:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:14,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:31:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:31:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:31:19,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 18:31:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:31:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:19,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:31:19,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:19,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:31:19,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 18:31:19,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:31:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 18:31:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:19,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:19,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:31:19,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:19,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 18:31:19,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:19,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:19,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:19,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:31:19,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:31:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:19,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:31:19,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:19,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 18:31:19,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:31:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 18:31:19,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388488539] [2020-10-12 18:31:19,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:19,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:31:19,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060159535] [2020-10-12 18:31:19,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:31:19,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:19,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:31:19,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:31:19,805 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-12 18:31:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:19,953 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-12 18:31:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:31:19,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 18:31:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:19,956 INFO L225 Difference]: With dead ends: 52 [2020-10-12 18:31:19,957 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 18:31:19,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:31:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 18:31:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 18:31:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 18:31:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 18:31:19,967 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-12 18:31:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:19,967 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 18:31:19,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:31:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 18:31:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 18:31:19,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:19,969 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:19,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:31:19,970 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:19,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1548340197, now seen corresponding path program 3 times [2020-10-12 18:31:19,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:19,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603258765] [2020-10-12 18:31:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:20,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:24,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:24,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:31:24,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:31:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 18:31:24,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 18:31:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:31:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:25,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:25,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:31:25,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:25,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:31:25,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 18:31:25,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:31:25,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 18:31:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:25,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:31:25,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 18:31:25,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:31:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:31:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:25,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:31:25,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 18:31:25,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:31:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 18:31:25,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603258765] [2020-10-12 18:31:25,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:25,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:31:25,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803896964] [2020-10-12 18:31:25,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:31:25,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:25,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:31:25,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:31:25,310 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-12 18:31:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:25,524 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-12 18:31:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:31:25,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 18:31:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:25,526 INFO L225 Difference]: With dead ends: 56 [2020-10-12 18:31:25,527 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 18:31:25,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:31:25,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 18:31:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 18:31:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:31:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 18:31:25,540 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-12 18:31:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:25,541 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 18:31:25,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:31:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 18:31:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 18:31:25,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:25,549 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:25,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:31:25,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:25,552 INFO L82 PathProgramCache]: Analyzing trace with hash 916686915, now seen corresponding path program 4 times [2020-10-12 18:31:25,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:25,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643476243] [2020-10-12 18:31:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:31:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:31:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:31:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:31:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:30,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:30,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:30,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:31:30,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 18:31:30,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:31:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:31:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 18:31:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:30,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:31:30,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:30,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:31:30,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:30,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:30,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:31:30,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 18:31:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:31:30,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:31:30,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:31:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 18:31:30,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643476243] [2020-10-12 18:31:30,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:30,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:31:30,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692541371] [2020-10-12 18:31:30,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:31:30,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:30,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:31:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:31:30,817 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 18:31:30,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:30,988 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 18:31:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:31:30,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 18:31:30,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:30,989 INFO L225 Difference]: With dead ends: 60 [2020-10-12 18:31:30,990 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:31:30,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:31:30,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:31:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 18:31:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 18:31:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 18:31:30,998 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 18:31:30,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:30,999 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 18:31:31,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:31:31,000 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 18:31:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 18:31:31,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:31,002 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:31,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:31:31,003 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1264663007, now seen corresponding path program 5 times [2020-10-12 18:31:31,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:31,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928475423] [2020-10-12 18:31:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:31:36,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:31:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:31:36,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 18:31:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:31:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:36,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:36,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:36,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:31:36,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 18:31:36,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:31:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 18:31:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:31:36,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:36,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 18:31:36,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:31:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 18:31:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:31:36,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 18:31:36,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:31:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 18:31:36,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928475423] [2020-10-12 18:31:36,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:36,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:31:36,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429945631] [2020-10-12 18:31:36,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:31:36,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:36,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:31:36,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:31:36,248 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 18:31:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:36,432 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 18:31:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:31:36,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 18:31:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:36,434 INFO L225 Difference]: With dead ends: 64 [2020-10-12 18:31:36,434 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 18:31:36,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:31:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 18:31:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 18:31:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:31:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 18:31:36,440 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 18:31:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:36,441 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 18:31:36,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:31:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 18:31:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:31:36,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:36,442 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:36,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:31:36,442 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:36,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:36,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1251206527, now seen corresponding path program 6 times [2020-10-12 18:31:36,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:36,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737700189] [2020-10-12 18:31:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:41,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:31:41,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:31:41,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:41,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:41,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:41,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:41,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:41,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:41,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:41,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:41,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:41,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:41,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 18:31:41,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:41,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:31:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:41,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:41,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:41,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:31:41,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:41,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:31:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:41,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:41,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:41,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 18:31:41,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:31:41,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737700189] [2020-10-12 18:31:41,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:41,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:31:41,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091853793] [2020-10-12 18:31:41,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:31:41,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:41,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:31:41,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:31:41,689 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 18:31:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:41,894 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 18:31:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:31:41,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 18:31:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:41,896 INFO L225 Difference]: With dead ends: 68 [2020-10-12 18:31:41,896 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 18:31:41,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:31:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 18:31:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 18:31:41,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 18:31:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 18:31:41,903 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 18:31:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:41,903 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 18:31:41,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:31:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 18:31:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 18:31:41,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:41,904 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:41,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:31:41,905 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:41,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1668499037, now seen corresponding path program 7 times [2020-10-12 18:31:41,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:41,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682805640] [2020-10-12 18:31:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:46,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:31:46,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:46,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:31:46,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:31:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:46,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:46,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:46,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:31:46,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 18:31:46,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:31:46,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:47,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 18:31:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:47,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:47,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:47,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:31:47,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:47,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 18:31:47,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:47,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:47,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:31:47,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:47,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:31:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:47,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:47,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:47,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:47,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:31:47,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 18:31:47,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:31:47,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 18:31:47,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682805640] [2020-10-12 18:31:47,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:47,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:31:47,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054201648] [2020-10-12 18:31:47,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:31:47,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:47,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:31:47,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:31:47,205 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 18:31:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:47,436 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 18:31:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:31:47,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 18:31:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:47,438 INFO L225 Difference]: With dead ends: 72 [2020-10-12 18:31:47,438 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 18:31:47,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:31:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 18:31:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 18:31:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 18:31:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 18:31:47,446 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 18:31:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:47,446 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 18:31:47,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:31:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 18:31:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:31:47,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:47,447 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:47,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:31:47,448 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:47,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:47,448 INFO L82 PathProgramCache]: Analyzing trace with hash -691713861, now seen corresponding path program 8 times [2020-10-12 18:31:47,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:47,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109509792] [2020-10-12 18:31:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:47,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:52,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 18:31:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:31:52,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 18:31:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:31:52,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:52,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:52,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:52,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:52,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:52,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:52,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:52,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:52,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:31:52,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 18:31:52,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:31:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 18:31:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:52,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:31:52,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 18:31:52,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:31:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:31:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:52,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:31:52,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 18:31:52,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:31:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 18:31:52,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109509792] [2020-10-12 18:31:52,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:52,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:31:52,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819598494] [2020-10-12 18:31:52,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:31:52,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:52,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:31:52,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:31:52,766 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 18:31:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:53,057 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 18:31:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:31:53,058 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 18:31:53,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:53,061 INFO L225 Difference]: With dead ends: 76 [2020-10-12 18:31:53,061 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 18:31:53,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:31:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 18:31:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 18:31:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 18:31:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 18:31:53,070 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 18:31:53,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:53,070 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 18:31:53,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:31:53,071 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 18:31:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 18:31:53,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:53,072 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:53,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:31:53,072 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:53,073 INFO L82 PathProgramCache]: Analyzing trace with hash -559264615, now seen corresponding path program 9 times [2020-10-12 18:31:53,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:53,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595965688] [2020-10-12 18:31:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:31:58,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:31:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 18:31:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:58,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:31:58,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 18:31:58,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:31:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:58,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:31:58,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:31:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:58,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:58,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 18:31:58,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:58,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 18:31:58,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595965688] [2020-10-12 18:31:58,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:58,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:31:58,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965904841] [2020-10-12 18:31:58,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:31:58,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:58,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:31:58,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:31:58,416 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 18:31:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:58,712 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-12 18:31:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:31:58,712 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 18:31:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:58,713 INFO L225 Difference]: With dead ends: 79 [2020-10-12 18:31:58,713 INFO L226 Difference]: Without dead ends: 45 [2020-10-12 18:31:58,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:31:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-12 18:31:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-12 18:31:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 18:31:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 18:31:58,720 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 18:31:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:58,721 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 18:31:58,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:31:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 18:31:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 18:31:58,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:58,722 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:58,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:31:58,723 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:58,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1915047433, now seen corresponding path program 10 times [2020-10-12 18:31:58,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:58,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796604904] [2020-10-12 18:31:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:31:59,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-12 18:31:59,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:31:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:31:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:31:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:59,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:59,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:31:59,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:31:59,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:31:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 18:31:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:31:59,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:31:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:31:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:31:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:31:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:31:59,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:31:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:31:59,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796604904] [2020-10-12 18:31:59,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:31:59,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:31:59,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123171557] [2020-10-12 18:31:59,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:31:59,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:59,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:31:59,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:31:59,199 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2020-10-12 18:31:59,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:59,256 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-12 18:31:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:31:59,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-12 18:31:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:59,258 INFO L225 Difference]: With dead ends: 84 [2020-10-12 18:31:59,258 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 18:31:59,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 18:31:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 18:31:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-12 18:31:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 18:31:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-12 18:31:59,264 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 92 [2020-10-12 18:31:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:59,265 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-12 18:31:59,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:31:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-12 18:31:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 18:31:59,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:59,266 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 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 18:31:59,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:31:59,266 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash 185745241, now seen corresponding path program 1 times [2020-10-12 18:31:59,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:59,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88430229] [2020-10-12 18:31:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 18:31:59,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-12 18:31:59,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:31:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:31:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:31:59,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:59,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:59,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:59,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:31:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:31:59,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:31:59,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:31:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:59,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 18:31:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:31:59,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:31:59,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:59,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:31:59,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:31:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:59,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:31:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:31:59,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:31:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:59,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:31:59,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88430229] [2020-10-12 18:31:59,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:59,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:31:59,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949153960] [2020-10-12 18:31:59,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:31:59,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:31:59,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:31:59,875 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-10-12 18:31:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:59,934 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-12 18:31:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:31:59,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 18:31:59,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:59,936 INFO L225 Difference]: With dead ends: 86 [2020-10-12 18:31:59,936 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 18:31:59,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:31:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 18:31:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-12 18:31:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 18:31:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-12 18:31:59,943 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 94 [2020-10-12 18:31:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:59,943 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-12 18:31:59,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:31:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-12 18:31:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 18:31:59,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:59,944 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:59,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:31:59,944 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:59,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:59,945 INFO L82 PathProgramCache]: Analyzing trace with hash 412875835, now seen corresponding path program 2 times [2020-10-12 18:31:59,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:59,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552303780] [2020-10-12 18:31:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 18:32:00,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:00,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-12 18:32:00,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:32:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:32:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:32:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:00,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:00,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 18:32:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:00,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:00,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:32:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:00,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:00,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:32:00,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:32:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:00,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:32:00,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:32:00,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552303780] [2020-10-12 18:32:00,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:00,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:32:00,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942866503] [2020-10-12 18:32:00,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:32:00,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:00,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:32:00,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:32:00,727 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-10-12 18:32:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:00,792 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-12 18:32:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:32:00,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-12 18:32:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:00,793 INFO L225 Difference]: With dead ends: 88 [2020-10-12 18:32:00,793 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 18:32:00,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:32:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 18:32:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-12 18:32:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 18:32:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-12 18:32:00,800 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 96 [2020-10-12 18:32:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:00,800 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-12 18:32:00,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:32:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-12 18:32:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 18:32:00,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:00,801 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:00,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:32:00,802 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:00,802 INFO L82 PathProgramCache]: Analyzing trace with hash -357955427, now seen corresponding path program 3 times [2020-10-12 18:32:00,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:00,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661877031] [2020-10-12 18:32:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 18:32:02,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:02,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-12 18:32:02,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:32:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:32:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:32:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:02,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:02,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:02,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:02,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 18:32:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:02,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:02,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:32:02,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:02,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 18:32:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:02,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:02,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:32:02,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 18:32:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:02,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:02,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:32:02,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:02,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:32:02,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661877031] [2020-10-12 18:32:02,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:02,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:32:02,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780820667] [2020-10-12 18:32:02,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:32:02,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:02,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:32:02,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:32:02,372 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-10-12 18:32:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:02,438 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-12 18:32:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:32:02,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-12 18:32:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:02,439 INFO L225 Difference]: With dead ends: 90 [2020-10-12 18:32:02,439 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 18:32:02,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:32:02,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 18:32:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-12 18:32:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 18:32:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-12 18:32:02,445 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 98 [2020-10-12 18:32:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:02,446 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-12 18:32:02,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:32:02,446 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-12 18:32:02,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 18:32:02,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:02,447 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:02,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:32:02,448 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:02,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:02,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1902543999, now seen corresponding path program 4 times [2020-10-12 18:32:02,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:02,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689882020] [2020-10-12 18:32:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:03,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 18:32:03,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:03,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-12 18:32:03,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:32:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:32:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:32:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:03,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:03,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:03,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:03,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:32:03,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:03,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:03,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:03,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:03,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:03,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 18:32:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:03,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:03,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:03,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:03,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 18:32:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:03,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:03,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:32:03,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:03,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:32:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:03,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:03,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:03,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:32:03,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:32:03,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689882020] [2020-10-12 18:32:03,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:03,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:32:03,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470202714] [2020-10-12 18:32:03,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:32:03,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:03,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:32:03,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:32:03,419 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 8 states. [2020-10-12 18:32:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:03,533 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-12 18:32:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:32:03,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-12 18:32:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:03,535 INFO L225 Difference]: With dead ends: 92 [2020-10-12 18:32:03,535 INFO L226 Difference]: Without dead ends: 55 [2020-10-12 18:32:03,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:32:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-12 18:32:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-12 18:32:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 18:32:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-12 18:32:03,541 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 100 [2020-10-12 18:32:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:03,541 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-12 18:32:03,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:32:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-12 18:32:03,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 18:32:03,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:03,544 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:03,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:32:03,544 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:03,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:03,545 INFO L82 PathProgramCache]: Analyzing trace with hash 989040609, now seen corresponding path program 5 times [2020-10-12 18:32:03,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:03,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466492357] [2020-10-12 18:32:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 18:32:05,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1621 [2020-10-12 18:32:05,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:32:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:32:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:05,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:05,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 18:32:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:05,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:32:05,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:05,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:05,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:05,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:32:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:05,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:32:05,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:05,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 18:32:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:05,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:32:05,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:32:05,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466492357] [2020-10-12 18:32:05,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:05,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:32:05,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631791700] [2020-10-12 18:32:05,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:32:05,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:32:05,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:32:05,335 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 9 states. [2020-10-12 18:32:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:05,438 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-10-12 18:32:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:32:05,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-12 18:32:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:05,441 INFO L225 Difference]: With dead ends: 94 [2020-10-12 18:32:05,441 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 18:32:05,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:32:05,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 18:32:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-12 18:32:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 18:32:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-12 18:32:05,450 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 102 [2020-10-12 18:32:05,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:05,450 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-12 18:32:05,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:32:05,450 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-12 18:32:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:32:05,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:05,451 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:05,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:32:05,452 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:05,452 INFO L82 PathProgramCache]: Analyzing trace with hash -714388797, now seen corresponding path program 6 times [2020-10-12 18:32:05,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:05,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31704907] [2020-10-12 18:32:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:06,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:06,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:32:06,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:06,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1487 [2020-10-12 18:32:06,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:32:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:32:06,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:32:06,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:07,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:07,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:07,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:07,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:07,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 18:32:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:07,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:07,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:07,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:32:07,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 18:32:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:07,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:07,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:07,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:07,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:07,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 18:32:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:07,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:07,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:07,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:32:07,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31704907] [2020-10-12 18:32:07,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:07,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:32:07,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870351248] [2020-10-12 18:32:07,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:32:07,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:07,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:32:07,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:32:07,072 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 10 states. [2020-10-12 18:32:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:07,180 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-12 18:32:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:32:07,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-12 18:32:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:07,182 INFO L225 Difference]: With dead ends: 96 [2020-10-12 18:32:07,182 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 18:32:07,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:32:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 18:32:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-12 18:32:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 18:32:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-12 18:32:07,188 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 104 [2020-10-12 18:32:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:07,188 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-12 18:32:07,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:32:07,189 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-12 18:32:07,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 18:32:07,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:07,190 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:07,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:32:07,190 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:07,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1327508187, now seen corresponding path program 7 times [2020-10-12 18:32:07,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:07,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757769298] [2020-10-12 18:32:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:08,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:08,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 18:32:08,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1305 [2020-10-12 18:32:08,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:32:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:32:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:08,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:08,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:08,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:08,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:32:08,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:08,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:08,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 18:32:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:08,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:08,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:08,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:08,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:08,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:08,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:08,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 18:32:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:08,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:08,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:08,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:08,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:08,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:32:08,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:08,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:08,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:32:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:08,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:08,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:08,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:32:08,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:08,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:32:08,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757769298] [2020-10-12 18:32:08,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:08,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:32:08,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30478225] [2020-10-12 18:32:08,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:32:08,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:08,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:32:08,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:32:08,633 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 11 states. [2020-10-12 18:32:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:08,723 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-12 18:32:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:32:08,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-12 18:32:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:08,725 INFO L225 Difference]: With dead ends: 98 [2020-10-12 18:32:08,725 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 18:32:08,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:32:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 18:32:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-12 18:32:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-12 18:32:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-12 18:32:08,732 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 106 [2020-10-12 18:32:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:08,732 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-12 18:32:08,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:32:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-12 18:32:08,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 18:32:08,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:08,734 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:08,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:32:08,734 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:08,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2124722425, now seen corresponding path program 8 times [2020-10-12 18:32:08,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:08,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285699601] [2020-10-12 18:32:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:08,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 18:32:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-12 18:32:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:32:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:32:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:32:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:10,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:10,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:10,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:32:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:10,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:10,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:32:10,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:10,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:32:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:10,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:10,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:10,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:32:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:10,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:32:10,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285699601] [2020-10-12 18:32:10,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:10,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:32:10,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276414990] [2020-10-12 18:32:10,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:32:10,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:10,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:32:10,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:32:10,335 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 12 states. [2020-10-12 18:32:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:10,446 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-12 18:32:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:32:10,447 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-12 18:32:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:10,448 INFO L225 Difference]: With dead ends: 100 [2020-10-12 18:32:10,448 INFO L226 Difference]: Without dead ends: 63 [2020-10-12 18:32:10,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:32:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-12 18:32:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-12 18:32:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-12 18:32:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-12 18:32:10,455 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 108 [2020-10-12 18:32:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:10,455 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-12 18:32:10,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:32:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-12 18:32:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 18:32:10,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:10,456 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:10,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:32:10,457 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:10,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:10,457 INFO L82 PathProgramCache]: Analyzing trace with hash 551540841, now seen corresponding path program 9 times [2020-10-12 18:32:10,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:10,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122296259] [2020-10-12 18:32:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 18:32:12,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1634 [2020-10-12 18:32:12,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:32:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:32:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:32:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:12,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:12,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 18:32:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:32:12,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 18:32:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:12,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:12,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 18:32:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:12,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:32:12,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-12 18:32:12,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122296259] [2020-10-12 18:32:12,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:12,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:32:12,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348700194] [2020-10-12 18:32:12,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:32:12,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:32:12,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:32:12,268 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 13 states. [2020-10-12 18:32:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:12,392 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2020-10-12 18:32:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:32:12,393 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-12 18:32:12,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:12,393 INFO L225 Difference]: With dead ends: 101 [2020-10-12 18:32:12,394 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 18:32:12,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:32:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 18:32:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-12 18:32:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-12 18:32:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-12 18:32:12,399 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 110 [2020-10-12 18:32:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:12,399 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-12 18:32:12,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:32:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-12 18:32:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 18:32:12,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:12,401 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:12,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:32:12,401 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:12,402 INFO L82 PathProgramCache]: Analyzing trace with hash -244870837, now seen corresponding path program 10 times [2020-10-12 18:32:12,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:12,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045945974] [2020-10-12 18:32:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 18:32:12,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-12 18:32:12,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:32:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:32:12,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:12,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:12,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:12,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:12,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:12,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:32:12,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:12,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:32:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:12,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:32:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:12,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:12,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045945974] [2020-10-12 18:32:12,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:32:12,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:32:12,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140081283] [2020-10-12 18:32:12,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:32:12,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:32:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:32:12,874 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 4 states. [2020-10-12 18:32:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:12,937 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-12 18:32:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:32:12,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-12 18:32:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:12,938 INFO L225 Difference]: With dead ends: 97 [2020-10-12 18:32:12,939 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 18:32:12,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 18:32:12,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 18:32:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 18:32:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 18:32:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 18:32:12,944 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 112 [2020-10-12 18:32:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:12,945 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 18:32:12,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:32:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 18:32:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 18:32:12,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:12,948 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 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 18:32:12,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:32:12,948 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:12,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1708464329, now seen corresponding path program 1 times [2020-10-12 18:32:12,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:12,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830718805] [2020-10-12 18:32:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:13,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:13,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 18:32:13,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:13,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-12 18:32:13,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:32:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:13,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:32:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:13,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:13,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:13,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:13,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:13,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:13,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:13,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:13,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:13,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:13,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:13,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:13,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:13,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:13,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:13,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:13,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:32:13,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:13,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 18:32:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:13,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:13,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:13,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:13,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:32:13,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:13,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830718805] [2020-10-12 18:32:13,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:13,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:32:13,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263438368] [2020-10-12 18:32:13,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:32:13,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:13,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:32:13,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:32:13,654 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-10-12 18:32:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:13,732 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-12 18:32:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:32:13,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 18:32:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:13,736 INFO L225 Difference]: With dead ends: 99 [2020-10-12 18:32:13,736 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 18:32:13,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:32:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 18:32:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 18:32:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 18:32:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 18:32:13,749 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 114 [2020-10-12 18:32:13,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:13,750 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 18:32:13,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:32:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 18:32:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 18:32:13,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:13,752 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:13,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:32:13,753 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:13,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:13,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1962850503, now seen corresponding path program 2 times [2020-10-12 18:32:13,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:13,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888115178] [2020-10-12 18:32:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:14,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 18:32:14,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-12 18:32:14,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:32:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:14,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:32:14,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:14,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:14,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:14,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:32:14,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:14,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:14,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:14,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:14,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:14,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:14,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:32:14,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:14,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 18:32:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:14,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:14,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:14,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:14,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:14,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:14,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:14,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:14,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:14,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888115178] [2020-10-12 18:32:14,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:14,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:32:14,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681074314] [2020-10-12 18:32:14,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:32:14,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:14,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:32:14,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:32:14,503 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 6 states. [2020-10-12 18:32:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:14,577 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-12 18:32:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:32:14,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-12 18:32:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:14,578 INFO L225 Difference]: With dead ends: 101 [2020-10-12 18:32:14,578 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 18:32:14,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:32:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 18:32:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 18:32:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 18:32:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 18:32:14,584 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 116 [2020-10-12 18:32:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:14,585 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 18:32:14,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:32:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 18:32:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 18:32:14,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:14,586 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:14,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:32:14,587 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:14,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1614827845, now seen corresponding path program 3 times [2020-10-12 18:32:14,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:14,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385563840] [2020-10-12 18:32:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:14,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:15,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 18:32:15,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:15,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-12 18:32:15,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:15,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:32:15,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:15,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:32:15,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:15,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:15,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:15,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:15,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:15,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:15,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:15,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:15,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:15,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:15,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:15,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:15,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:15,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:15,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:15,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 18:32:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:15,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:15,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:15,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:32:15,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:15,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:15,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:15,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:15,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385563840] [2020-10-12 18:32:15,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:15,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:32:15,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766926806] [2020-10-12 18:32:15,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:32:15,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:32:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:32:15,449 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 7 states. [2020-10-12 18:32:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:15,526 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-12 18:32:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:32:15,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-12 18:32:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:15,527 INFO L225 Difference]: With dead ends: 103 [2020-10-12 18:32:15,527 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 18:32:15,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:32:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 18:32:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 18:32:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 18:32:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 18:32:15,533 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 118 [2020-10-12 18:32:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:15,534 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 18:32:15,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:32:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 18:32:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 18:32:15,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:15,535 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:15,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 18:32:15,536 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:15,536 INFO L82 PathProgramCache]: Analyzing trace with hash -2122464701, now seen corresponding path program 4 times [2020-10-12 18:32:15,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:15,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63676241] [2020-10-12 18:32:15,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 18:32:16,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-12 18:32:16,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:32:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:32:16,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:16,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:16,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:16,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:16,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:32:16,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:16,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:16,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:32:16,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 18:32:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:16,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:16,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63676241] [2020-10-12 18:32:16,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:16,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:32:16,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165530601] [2020-10-12 18:32:16,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:32:16,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:16,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:32:16,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:32:16,525 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 8 states. [2020-10-12 18:32:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:16,623 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-12 18:32:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:32:16,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-12 18:32:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:16,625 INFO L225 Difference]: With dead ends: 105 [2020-10-12 18:32:16,625 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 18:32:16,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:32:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 18:32:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 18:32:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 18:32:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 18:32:16,631 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-12 18:32:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:16,632 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 18:32:16,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:32:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 18:32:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 18:32:16,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:16,633 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:16,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 18:32:16,633 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:16,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:16,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1227025345, now seen corresponding path program 5 times [2020-10-12 18:32:16,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:16,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338209013] [2020-10-12 18:32:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:17,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:32:17,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-12 18:32:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:32:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:17,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:17,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:17,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:17,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:17,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:17,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:17,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:17,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:17,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:17,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:17,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:17,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:17,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:17,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:32:17,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 18:32:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:17,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:17,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:17,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:32:17,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:17,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338209013] [2020-10-12 18:32:17,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:17,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:32:17,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064405118] [2020-10-12 18:32:17,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:32:17,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:17,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:32:17,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:32:17,677 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 9 states. [2020-10-12 18:32:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:17,779 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-12 18:32:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:32:17,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2020-10-12 18:32:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:17,781 INFO L225 Difference]: With dead ends: 107 [2020-10-12 18:32:17,782 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 18:32:17,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:32:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 18:32:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 18:32:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 18:32:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 18:32:17,788 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-12 18:32:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:17,789 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 18:32:17,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:32:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 18:32:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 18:32:17,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:17,790 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:17,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 18:32:17,790 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:17,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1138512449, now seen corresponding path program 6 times [2020-10-12 18:32:17,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:17,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904143117] [2020-10-12 18:32:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 18:32:19,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-12 18:32:19,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:32:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:32:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:19,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:19,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:19,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:19,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:32:19,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:19,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:19,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:19,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:32:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:19,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:19,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:32:19,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:19,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:19,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:19,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904143117] [2020-10-12 18:32:19,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:19,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:32:19,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066490438] [2020-10-12 18:32:19,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:32:19,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:19,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:32:19,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:32:19,713 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-12 18:32:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:19,829 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-12 18:32:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:32:19,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-12 18:32:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:19,831 INFO L225 Difference]: With dead ends: 109 [2020-10-12 18:32:19,831 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 18:32:19,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:32:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 18:32:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 18:32:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 18:32:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 18:32:19,841 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-12 18:32:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:19,841 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 18:32:19,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:32:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 18:32:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 18:32:19,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:19,843 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:19,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 18:32:19,844 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1912334397, now seen corresponding path program 7 times [2020-10-12 18:32:19,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:19,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181971563] [2020-10-12 18:32:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:21,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 18:32:21,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1738 [2020-10-12 18:32:21,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:32:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:21,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:21,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:21,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:21,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:21,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:21,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:21,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:21,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:32:21,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 18:32:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:21,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:32:21,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:21,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181971563] [2020-10-12 18:32:21,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:21,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:32:21,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962320876] [2020-10-12 18:32:21,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:32:21,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:21,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:32:21,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:32:21,719 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 11 states. [2020-10-12 18:32:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:21,829 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-12 18:32:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:32:21,829 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 126 [2020-10-12 18:32:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:21,830 INFO L225 Difference]: With dead ends: 111 [2020-10-12 18:32:21,831 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 18:32:21,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:32:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 18:32:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 18:32:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 18:32:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 18:32:21,840 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-12 18:32:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:21,840 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 18:32:21,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:32:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 18:32:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 18:32:21,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:21,843 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:21,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 18:32:21,843 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:21,844 INFO L82 PathProgramCache]: Analyzing trace with hash 313490235, now seen corresponding path program 8 times [2020-10-12 18:32:21,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:21,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903325094] [2020-10-12 18:32:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:21,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:24,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 18:32:24,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2315 [2020-10-12 18:32:24,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:32:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 18:32:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:32:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:24,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:24,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:24,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:24,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:24,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:24,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 18:32:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:24,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:24,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:24,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:32:24,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:24,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:24,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:24,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:24,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:24,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:32:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:24,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:32:24,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:24,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 18:32:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:24,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:24,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:24,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:24,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:24,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 18:32:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:24,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-12 18:32:24,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903325094] [2020-10-12 18:32:24,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:24,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:32:24,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141821644] [2020-10-12 18:32:24,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:32:24,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:24,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:32:24,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:32:24,328 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 12 states. [2020-10-12 18:32:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:24,448 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2020-10-12 18:32:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:32:24,448 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-10-12 18:32:24,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:24,449 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:32:24,449 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 18:32:24,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:32:24,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 18:32:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-12 18:32:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 18:32:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 18:32:24,455 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-12 18:32:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:24,456 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 18:32:24,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:32:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 18:32:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 18:32:24,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:24,457 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:24,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 18:32:24,457 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1422542521, now seen corresponding path program 9 times [2020-10-12 18:32:24,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:24,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183067840] [2020-10-12 18:32:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 18:32:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7604 [2020-10-12 18:32:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-12 18:32:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 18:32:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 18:32:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0