/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:52:27,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:52:27,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:52:27,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:52:27,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:52:27,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:52:27,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:52:27,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:52:27,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:52:27,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:52:27,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:52:27,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:52:27,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:52:27,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:52:27,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:52:27,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:52:27,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:52:27,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:52:27,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:52:27,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:52:27,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:52:27,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:52:27,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:52:27,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:52:27,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:52:27,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:52:27,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:52:27,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:52:27,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:52:27,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:52:27,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:52:27,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:52:27,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:52:27,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:52:27,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:52:27,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:52:27,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:52:27,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:52:27,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:52:27,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:52:27,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:52:27,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:52:27,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:52:27,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:52:27,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:52:27,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:52:27,766 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:52:27,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:52:27,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:52:27,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:52:27,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:52:27,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:52:27,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:52:27,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:52:27,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:52:27,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:52:27,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:52:27,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:52:27,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:52:27,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:52:27,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:52:27,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:52:27,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:52:27,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:27,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:52:27,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:52:27,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:52:27,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:52:27,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:52:27,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:52:27,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:52:27,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:52:28,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:52:28,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:52:28,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:52:28,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:52:28,238 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:52:28,239 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 08:52:28,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542b55d5a/cdf8593833f447cc801f1cd3707ea82d/FLAGcbc115ede [2020-09-25 08:52:28,852 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:52:28,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 08:52:28,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542b55d5a/cdf8593833f447cc801f1cd3707ea82d/FLAGcbc115ede [2020-09-25 08:52:29,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542b55d5a/cdf8593833f447cc801f1cd3707ea82d [2020-09-25 08:52:29,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:52:29,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:52:29,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:29,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:52:29,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:52:29,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29, skipping insertion in model container [2020-09-25 08:52:29,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:52:29,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:52:29,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:29,499 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:52:29,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:29,535 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:52:29,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29 WrapperNode [2020-09-25 08:52:29,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:29,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:52:29,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:52:29,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:52:29,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (1/1) ... [2020-09-25 08:52:29,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:52:29,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:52:29,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:52:29,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:52:29,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:52:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:52:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-25 08:52:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:52:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:52:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:52:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-25 08:52:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:52:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:52:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:52:29,964 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:52:29,964 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:52:29,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:29 BoogieIcfgContainer [2020-09-25 08:52:29,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:52:29,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:52:29,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:52:29,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:52:29,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:52:29" (1/3) ... [2020-09-25 08:52:29,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3a3b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:29, skipping insertion in model container [2020-09-25 08:52:29,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:29" (2/3) ... [2020-09-25 08:52:29,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3a3b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:29, skipping insertion in model container [2020-09-25 08:52:29,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:29" (3/3) ... [2020-09-25 08:52:29,981 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-25 08:52:29,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:52:30,005 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:52:30,030 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:52:30,064 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:52:30,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:52:30,065 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:52:30,065 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:52:30,065 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:52:30,065 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:52:30,065 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:52:30,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:52:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 08:52:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 08:52:30,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:30,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:30,110 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:30,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-09-25 08:52:30,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:30,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915365669] [2020-09-25 08:52:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:30,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:52:31,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:31,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1081 [2020-09-25 08:52:31,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:52:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:52:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 08:52:31,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:31,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:31,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:31,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:52:31,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:31,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:52:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:31,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:52:31,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:52:31,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915365669] [2020-09-25 08:52:31,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:31,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 08:52:31,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890855507] [2020-09-25 08:52:31,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:52:31,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:31,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:52:31,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:31,628 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 08:52:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:31,811 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 08:52:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:31,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-25 08:52:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:31,828 INFO L225 Difference]: With dead ends: 64 [2020-09-25 08:52:31,828 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 08:52:31,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 08:52:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 08:52:31,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 08:52:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 08:52:31,899 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-09-25 08:52:31,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:31,900 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 08:52:31,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:52:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 08:52:31,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 08:52:31,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:31,904 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:31,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:52:31,904 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:31,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1309951713, now seen corresponding path program 1 times [2020-09-25 08:52:31,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:31,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206757083] [2020-09-25 08:52:31,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 08:52:32,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 08:52:32,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 08:52:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 08:52:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:32,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:32,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:32,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:52:32,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:32,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:32,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:32,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:32,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 08:52:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:32,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:52:32,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 08:52:32,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206757083] [2020-09-25 08:52:32,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:32,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:52:32,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563794041] [2020-09-25 08:52:32,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:52:32,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:32,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:52:32,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:32,135 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2020-09-25 08:52:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:32,205 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-09-25 08:52:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:32,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-25 08:52:32,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:32,208 INFO L225 Difference]: With dead ends: 51 [2020-09-25 08:52:32,208 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 08:52:32,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 08:52:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 08:52:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 08:52:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-25 08:52:32,219 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 46 [2020-09-25 08:52:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:32,220 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-25 08:52:32,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:52:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-25 08:52:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 08:52:32,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:32,223 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:32,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:52:32,224 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:32,224 INFO L82 PathProgramCache]: Analyzing trace with hash -793708719, now seen corresponding path program 1 times [2020-09-25 08:52:32,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:32,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530995750] [2020-09-25 08:52:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 08:52:34,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:52:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1873 [2020-09-25 08:52:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:52:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:52:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:52:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:34,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:34,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:34,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:52:34,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:34,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:34,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 08:52:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:34,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-25 08:52:34,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:52:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:52:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:52:34,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:35,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:35,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:35,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 08:52:35,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:35,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:35,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:35,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:35,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:35,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:35,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:35,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:52:35,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:35,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 08:52:35,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530995750] [2020-09-25 08:52:35,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:35,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:52:35,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025065143] [2020-09-25 08:52:35,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:52:35,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:35,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:52:35,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:52:35,159 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 8 states. [2020-09-25 08:52:35,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:35,322 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2020-09-25 08:52:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:52:35,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-25 08:52:35,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:35,325 INFO L225 Difference]: With dead ends: 84 [2020-09-25 08:52:35,326 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 08:52:35,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:52:35,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 08:52:35,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-25 08:52:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 08:52:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-25 08:52:35,343 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 65 [2020-09-25 08:52:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:35,343 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-25 08:52:35,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:52:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-25 08:52:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 08:52:35,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:35,350 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:35,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:52:35,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:35,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1957858366, now seen corresponding path program 2 times [2020-09-25 08:52:35,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:35,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137240992] [2020-09-25 08:52:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 08:52:40,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:52:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:52:40,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:52:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:52:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:40,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:40,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:40,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 08:52:40,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:40,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:40,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:52:40,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 08:52:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:41,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:41,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:52:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-09-25 08:52:41,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:41,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:41,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:52:41,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 08:52:41,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:52:41,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:42,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-09-25 08:52:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:42,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:42,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:42,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:42,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:42,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:42,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:42,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 08:52:42,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:42,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:42,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:42,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:42,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:42,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:42,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:42,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 08:52:42,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:42,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 45 proven. 17 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 08:52:42,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137240992] [2020-09-25 08:52:42,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:42,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:52:42,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029975310] [2020-09-25 08:52:42,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:52:42,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:42,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:52:42,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:52:42,770 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 11 states. [2020-09-25 08:52:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:42,954 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2020-09-25 08:52:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:52:42,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2020-09-25 08:52:42,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:42,958 INFO L225 Difference]: With dead ends: 89 [2020-09-25 08:52:42,958 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 08:52:42,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:52:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 08:52:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-09-25 08:52:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 08:52:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-09-25 08:52:42,973 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 75 [2020-09-25 08:52:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:42,973 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-09-25 08:52:42,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:52:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-09-25 08:52:42,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 08:52:42,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:42,975 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:42,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:52:42,981 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:42,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:42,981 INFO L82 PathProgramCache]: Analyzing trace with hash 942191350, now seen corresponding path program 2 times [2020-09-25 08:52:42,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:42,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10089307] [2020-09-25 08:52:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:52:43,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-25 08:52:43,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:52:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:52:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:52:43,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:43,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:43,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:43,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:52:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:43,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 08:52:43,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:43,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:43,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:43,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 08:52:43,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:43,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:43,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:43,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:43,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 08:52:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:44,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:44,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:44,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 08:52:44,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:44,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:44,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:44,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:44,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:44,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 08:52:44,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:44,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:44,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:44,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:44,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:44,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 08:52:44,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10089307] [2020-09-25 08:52:44,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:44,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 08:52:44,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575320742] [2020-09-25 08:52:44,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 08:52:44,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:44,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 08:52:44,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:52:44,378 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 17 states. [2020-09-25 08:52:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:44,882 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-09-25 08:52:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:52:44,882 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 08:52:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:44,885 INFO L225 Difference]: With dead ends: 57 [2020-09-25 08:52:44,885 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 08:52:44,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-09-25 08:52:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 08:52:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-09-25 08:52:44,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 08:52:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-09-25 08:52:44,899 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 56 [2020-09-25 08:52:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:44,900 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-09-25 08:52:44,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 08:52:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-09-25 08:52:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 08:52:44,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:44,906 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2020-09-25 08:52:44,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:52:44,906 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:44,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:44,906 INFO L82 PathProgramCache]: Analyzing trace with hash 387973505, now seen corresponding path program 3 times [2020-09-25 08:52:44,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:44,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180440906] [2020-09-25 08:52:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:44,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:52:45,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-09-25 08:52:45,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 08:52:45,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:52:45,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 08:52:45,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:45,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:45,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:45,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:45,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:45,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:45,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 08:52:45,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:45,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:45,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:46,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:46,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:46,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:52:46,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:46,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 08:52:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:46,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:52:46,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 08:52:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:46,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:52:46,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:46,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:46,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:46,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:46,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 08:52:46,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:46,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:46,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:46,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:46,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:46,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:46,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 08:52:46,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:46,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 08:52:46,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180440906] [2020-09-25 08:52:46,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:46,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 08:52:46,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135841799] [2020-09-25 08:52:46,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 08:52:46,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:46,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 08:52:46,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:52:46,624 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 18 states. [2020-09-25 08:52:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:47,168 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-09-25 08:52:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:52:47,169 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 08:52:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:47,170 INFO L225 Difference]: With dead ends: 62 [2020-09-25 08:52:47,170 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 08:52:47,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-09-25 08:52:47,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 08:52:47,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 08:52:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:52:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-09-25 08:52:47,190 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 66 [2020-09-25 08:52:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:47,193 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-09-25 08:52:47,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 08:52:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-09-25 08:52:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:52:47,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:47,195 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:47,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:52:47,195 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:47,196 INFO L82 PathProgramCache]: Analyzing trace with hash 681092950, now seen corresponding path program 4 times [2020-09-25 08:52:47,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:47,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710530906] [2020-09-25 08:52:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 08:52:48,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-25 08:52:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 08:52:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:52:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:52:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:48,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:48,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:48,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:48,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:48,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 08:52:48,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:48,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 08:52:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:48,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 08:52:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:52:48,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-25 08:52:48,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:52:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:52:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:49,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:52:49,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 08:52:49,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:49,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:52:49,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:49,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:49,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 08:52:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:49,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:49,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:49,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 08:52:49,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:49,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 08:52:49,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710530906] [2020-09-25 08:52:49,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:49,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 08:52:49,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941114993] [2020-09-25 08:52:49,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 08:52:49,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:49,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 08:52:49,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:52:49,609 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 21 states. [2020-09-25 08:52:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:50,274 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-09-25 08:52:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 08:52:50,275 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 76 [2020-09-25 08:52:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:50,276 INFO L225 Difference]: With dead ends: 56 [2020-09-25 08:52:50,276 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 08:52:50,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 08:52:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 08:52:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-09-25 08:52:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 08:52:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-09-25 08:52:50,290 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 76 [2020-09-25 08:52:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:50,291 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-09-25 08:52:50,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 08:52:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-09-25 08:52:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:52:50,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:50,293 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:50,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:52:50,294 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:50,294 INFO L82 PathProgramCache]: Analyzing trace with hash -972388074, now seen corresponding path program 5 times [2020-09-25 08:52:50,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:50,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900507131] [2020-09-25 08:52:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:50,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 08:52:51,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-09-25 08:52:51,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 08:52:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:52:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:52:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:51,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:51,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:51,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:52:51,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 08:52:51,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:52:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:52:51,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:51,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 08:52:51,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:51,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:51,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:52:51,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:52:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:52,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:52,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:52:52,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 08:52:52,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:52,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:52:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:52,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:52,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:52,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:52,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 08:52:52,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:52,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:52,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:52,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:52,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:52:52,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:52,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:52,506 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 08:52:52,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900507131] [2020-09-25 08:52:52,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:52,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:52:52,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739060022] [2020-09-25 08:52:52,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:52:52,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:52,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:52:52,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:52:52,509 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 16 states. [2020-09-25 08:52:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:52,964 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-09-25 08:52:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:52:52,965 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-09-25 08:52:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:52,966 INFO L225 Difference]: With dead ends: 62 [2020-09-25 08:52:52,966 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 08:52:52,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-09-25 08:52:52,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 08:52:52,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 08:52:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:52:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-09-25 08:52:52,979 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 76 [2020-09-25 08:52:52,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:52,980 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-09-25 08:52:52,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:52:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-09-25 08:52:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 08:52:52,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:52,983 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1] [2020-09-25 08:52:52,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:52:52,984 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:52,984 INFO L82 PathProgramCache]: Analyzing trace with hash -516505397, now seen corresponding path program 6 times [2020-09-25 08:52:52,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:52,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888247930] [2020-09-25 08:52:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:52:53,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:53,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-09-25 08:52:53,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 08:52:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:52:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 08:52:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:53,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:53,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:53,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:53,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:52:53,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 08:52:53,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:52:53,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:53,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:52:53,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:54,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:54,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:54,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 08:52:54,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:54,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:54,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:54,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 08:52:54,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:54,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:52:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:54,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:54,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 08:52:54,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:54,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:54,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:54,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:54,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:54,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:52:54,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:54,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 08:52:54,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888247930] [2020-09-25 08:52:54,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:54,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 08:52:54,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145579085] [2020-09-25 08:52:54,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 08:52:54,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 08:52:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:52:54,435 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 18 states. [2020-09-25 08:52:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:54,953 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-09-25 08:52:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:52:54,954 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 08:52:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:54,955 INFO L225 Difference]: With dead ends: 62 [2020-09-25 08:52:54,955 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 08:52:54,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-09-25 08:52:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 08:52:54,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 08:52:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:52:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-09-25 08:52:54,963 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 66 [2020-09-25 08:52:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:54,963 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-09-25 08:52:54,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 08:52:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-09-25 08:52:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 08:52:54,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:54,965 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:54,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:52:54,965 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:54,966 INFO L82 PathProgramCache]: Analyzing trace with hash -27101013, now seen corresponding path program 7 times [2020-09-25 08:52:54,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:54,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959247915] [2020-09-25 08:52:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:55,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 08:52:56,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-09-25 08:52:56,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 08:52:56,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:52:56,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 08:52:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:56,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:56,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:56,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:56,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:52:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:52:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 08:52:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:52:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:52:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:56,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 08:52:56,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:56,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:56,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:52:56,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:52:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:52:57,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 08:52:57,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:52:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:52:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:52:57,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 08:52:57,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:52:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:57,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:57,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 08:52:57,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:57,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 08:52:57,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:57,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:57,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 92 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 08:52:57,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959247915] [2020-09-25 08:52:57,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:57,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 08:52:57,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840873034] [2020-09-25 08:52:57,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 08:52:57,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:57,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 08:52:57,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:52:57,657 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 22 states. [2020-09-25 08:52:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:58,467 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-25 08:52:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 08:52:58,467 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-09-25 08:52:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:58,468 INFO L225 Difference]: With dead ends: 67 [2020-09-25 08:52:58,469 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 08:52:58,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 08:52:58,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 08:52:58,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-25 08:52:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 08:52:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-09-25 08:52:58,483 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 86 [2020-09-25 08:52:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:58,484 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-09-25 08:52:58,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 08:52:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-09-25 08:52:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 08:52:58,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:58,486 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:58,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:52:58,486 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:58,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:58,486 INFO L82 PathProgramCache]: Analyzing trace with hash -694157514, now seen corresponding path program 8 times [2020-09-25 08:52:58,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:58,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12302104] [2020-09-25 08:52:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 08:53:00,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-09-25 08:53:00,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 08:53:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:53:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 08:53:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:00,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:53:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:53:00,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 08:53:00,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:53:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:53:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:00,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 08:53:00,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:00,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:53:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 08:53:00,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:53:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:53:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:01,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:01,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:01,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:01,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-09-25 08:53:01,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:01,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:01,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:01,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:01,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:53:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 08:53:01,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:01,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:53:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:53:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:01,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:01,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:53:01,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:01,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 08:53:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:01,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:53:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:53:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:01,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:01,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:01,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:01,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 08:53:01,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:01,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:02,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:53:02,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 08:53:02,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:53:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 08:53:02,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12302104] [2020-09-25 08:53:02,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:02,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 08:53:02,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717963011] [2020-09-25 08:53:02,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 08:53:02,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:02,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 08:53:02,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-09-25 08:53:02,192 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 24 states. [2020-09-25 08:53:03,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:03,457 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-09-25 08:53:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 08:53:03,457 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2020-09-25 08:53:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:03,458 INFO L225 Difference]: With dead ends: 72 [2020-09-25 08:53:03,459 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 08:53:03,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 08:53:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 08:53:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-25 08:53:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 08:53:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-09-25 08:53:03,477 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 96 [2020-09-25 08:53:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:03,482 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-09-25 08:53:03,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 08:53:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-09-25 08:53:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 08:53:03,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:03,486 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:03,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:53:03,486 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:03,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:03,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1979672437, now seen corresponding path program 9 times [2020-09-25 08:53:03,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:03,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792137559] [2020-09-25 08:53:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 08:53:05,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1832 [2020-09-25 08:53:05,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-25 08:53:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:53:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 08:53:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:05,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:05,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:53:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:53:05,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 08:53:05,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:53:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:53:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:05,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:05,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 08:53:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:05,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:53:05,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 08:53:05,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:53:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:53:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 08:53:06,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-09-25 08:53:06,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 08:53:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 08:53:06,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:07,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:07,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:07,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:07,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 08:53:07,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:07,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:07,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:07,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:07,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:53:07,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 08:53:07,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:07,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:53:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:53:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:07,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:07,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:53:07,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 08:53:07,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:07,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:53:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:53:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:07,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:07,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:07,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:07,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 08:53:07,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:07,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:07,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:07,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:07,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:07,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:08,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:08,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:08,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:53:08,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 08:53:08,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:08,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:53:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 25 proven. 183 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-25 08:53:08,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792137559] [2020-09-25 08:53:08,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:08,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 08:53:08,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190523842] [2020-09-25 08:53:08,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 08:53:08,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:08,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 08:53:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2020-09-25 08:53:08,200 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 27 states. [2020-09-25 08:53:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:09,595 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-09-25 08:53:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 08:53:09,596 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2020-09-25 08:53:09,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:09,598 INFO L225 Difference]: With dead ends: 77 [2020-09-25 08:53:09,598 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 08:53:09,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=246, Invalid=2010, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 08:53:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 08:53:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-09-25 08:53:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 08:53:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-09-25 08:53:09,607 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 106 [2020-09-25 08:53:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:09,607 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-09-25 08:53:09,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 08:53:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-09-25 08:53:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:53:09,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:09,609 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:09,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:53:09,609 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash 275016086, now seen corresponding path program 10 times [2020-09-25 08:53:09,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:09,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012014879] [2020-09-25 08:53:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 08:53:10,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-09-25 08:53:10,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 08:53:10,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:53:10,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:53:10,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:10,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:10,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:10,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:53:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:53:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:53:10,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 08:53:10,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:53:10,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:53:10,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:53:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 08:53:10,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:53:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:53:10,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:11,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:11,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:11,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 08:53:11,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:11,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:11,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:11,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:53:11,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:11,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:53:11,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:11,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:53:11,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:11,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:53:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:11,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:11,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:11,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 08:53:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:11,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:11,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:11,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:11,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:53:11,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:11,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:53:11,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:11,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:53:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 08:53:11,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012014879] [2020-09-25 08:53:11,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:11,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 08:53:11,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296897045] [2020-09-25 08:53:11,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 08:53:11,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:11,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 08:53:11,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:53:11,617 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 22 states. [2020-09-25 08:53:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:12,466 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2020-09-25 08:53:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 08:53:12,467 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2020-09-25 08:53:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:12,468 INFO L225 Difference]: With dead ends: 81 [2020-09-25 08:53:12,468 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 08:53:12,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 08:53:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 08:53:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-09-25 08:53:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 08:53:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-09-25 08:53:12,480 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 76 [2020-09-25 08:53:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:12,481 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-09-25 08:53:12,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 08:53:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-09-25 08:53:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 08:53:12,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:12,483 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:12,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:53:12,483 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1359901377, now seen corresponding path program 11 times [2020-09-25 08:53:12,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:12,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526157374] [2020-09-25 08:53:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 08:53:14,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-09-25 08:53:14,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-25 08:53:14,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:53:14,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 08:53:14,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:14,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:14,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:14,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:14,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 08:53:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:53:14,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 08:53:14,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:53:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:53:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:14,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:14,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:53:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:53:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:14,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 08:53:14,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:53:14,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:53:14,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:53:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:53:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:15,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:15,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:15,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 08:53:15,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:15,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:15,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:15,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:15,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:53:15,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:15,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 08:53:15,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:15,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:53:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:53:15,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1