/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:21:20,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:21:20,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:21:20,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:21:20,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:21:21,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:21:21,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:21:21,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:21:21,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:21:21,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:21:21,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:21:21,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:21:21,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:21:21,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:21:21,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:21:21,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:21:21,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:21:21,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:21:21,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:21:21,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:21:21,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:21:21,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:21:21,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:21:21,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:21:21,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:21:21,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:21:21,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:21:21,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:21:21,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:21:21,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:21:21,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:21:21,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:21:21,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:21:21,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:21:21,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:21:21,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:21:21,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:21:21,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:21:21,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:21:21,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:21:21,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:21:21,070 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 [2020-09-21 12:21:21,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:21:21,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:21:21,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:21:21,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:21:21,123 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:21:21,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:21:21,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:21:21,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:21:21,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:21:21,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:21:21,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:21:21,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:21:21,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:21:21,126 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:21:21,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:21:21,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:21:21,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:21:21,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:21:21,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:21:21,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:21:21,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:21:21,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:21:21,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:21:21,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:21:21,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:21:21,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:21:21,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:21:21,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:21:21,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:21:21,130 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:21:21,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:21:21,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:21:21,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:21:21,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:21:21,611 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:21:21,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-09-21 12:21:21,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc7ba1e5/9cf4b9f3c8d84644918a50e7ca527547/FLAG36a547b96 [2020-09-21 12:21:22,217 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:21:22,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition03-1.c [2020-09-21 12:21:22,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc7ba1e5/9cf4b9f3c8d84644918a50e7ca527547/FLAG36a547b96 [2020-09-21 12:21:22,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc7ba1e5/9cf4b9f3c8d84644918a50e7ca527547 [2020-09-21 12:21:22,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:21:22,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:21:22,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:21:22,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:21:22,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:21:22,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:22,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782f63b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22, skipping insertion in model container [2020-09-21 12:21:22,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:22,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:21:22,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:21:22,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:21:22,931 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:21:22,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:21:22,968 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:21:22,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22 WrapperNode [2020-09-21 12:21:22,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:21:22,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:21:22,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:21:22,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:21:22,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:22,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:23,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:23,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:23,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:23,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:23,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (1/1) ... [2020-09-21 12:21:23,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:21:23,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:21:23,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:21:23,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:21:23,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (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 [2020-09-21 12:21:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:21:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:21:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-21 12:21:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:21:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:21:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:21:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-21 12:21:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:21:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:21:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:21:23,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:21:23,410 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:21:23,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:21:23 BoogieIcfgContainer [2020-09-21 12:21:23,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:21:23,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:21:23,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:21:23,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:21:23,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:21:22" (1/3) ... [2020-09-21 12:21:23,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6f2997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:21:23, skipping insertion in model container [2020-09-21 12:21:23,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:22" (2/3) ... [2020-09-21 12:21:23,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6f2997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:21:23, skipping insertion in model container [2020-09-21 12:21:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:21:23" (3/3) ... [2020-09-21 12:21:23,426 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-09-21 12:21:23,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:21:23,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:21:23,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:21:23,502 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:21:23,502 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:21:23,502 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:21:23,502 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:21:23,503 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:21:23,503 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:21:23,503 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:21:23,503 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:21:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-21 12:21:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:21:23,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:23,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:23,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:23,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-09-21 12:21:23,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:23,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424509456] [2020-09-21 12:21:23,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:23,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:21:23,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-21 12:21:23,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:21:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:21:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:21:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:23,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:23,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:23,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:21:23,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:23,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:24,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 12:21:24,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:21:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:21:24,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424509456] [2020-09-21 12:21:24,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:21:24,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:21:24,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848371056] [2020-09-21 12:21:24,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:21:24,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:24,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:21:24,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:21:24,091 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-21 12:21:24,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:24,213 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-09-21 12:21:24,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:21:24,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:21:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:24,229 INFO L225 Difference]: With dead ends: 36 [2020-09-21 12:21:24,230 INFO L226 Difference]: Without dead ends: 22 [2020-09-21 12:21:24,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:21:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-21 12:21:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-21 12:21:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-21 12:21:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-09-21 12:21:24,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-09-21 12:21:24,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:24,290 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-09-21 12:21:24,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:21:24,291 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-09-21 12:21:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 12:21:24,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:24,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:24,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:21:24,294 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:24,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-09-21 12:21:24,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:24,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816626595] [2020-09-21 12:21:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:24,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:24,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 12:21:24,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:21:24,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-21 12:21:24,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:21:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:21:24,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:21:24,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:21:24,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:24,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:24,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:24,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:21:24,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:24,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:24,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:21:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:21:24,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:21:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:21:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:21:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:21:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:21:24,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816626595] [2020-09-21 12:21:24,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:21:24,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:21:24,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179348032] [2020-09-21 12:21:24,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:21:24,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:24,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:21:24,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:21:24,669 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-09-21 12:21:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:24,712 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-09-21 12:21:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:21:24,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-21 12:21:24,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:24,716 INFO L225 Difference]: With dead ends: 32 [2020-09-21 12:21:24,716 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 12:21:24,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:21:24,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 12:21:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-09-21 12:21:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-21 12:21:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-09-21 12:21:24,737 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-09-21 12:21:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:24,738 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-09-21 12:21:24,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:21:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-09-21 12:21:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:21:24,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:24,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:24,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:21:24,742 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-09-21 12:21:24,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:24,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100966058] [2020-09-21 12:21:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:24,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:24,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:24,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:21:24,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-21 12:21:24,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:21:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:21:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:24,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:24,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:24,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:21:24,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:24,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:25,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:25,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:25,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:21:25,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:21:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:25,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:25,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:25,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:25,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:21:25,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:25,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:21:25,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100966058] [2020-09-21 12:21:25,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:25,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:21:25,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236458344] [2020-09-21 12:21:25,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:21:25,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:25,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:21:25,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:21:25,116 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-09-21 12:21:25,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:25,230 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2020-09-21 12:21:25,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:21:25,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-21 12:21:25,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:25,232 INFO L225 Difference]: With dead ends: 31 [2020-09-21 12:21:25,233 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 12:21:25,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:21:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 12:21:25,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-09-21 12:21:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 12:21:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-09-21 12:21:25,243 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 20 [2020-09-21 12:21:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:25,243 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-09-21 12:21:25,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:21:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-09-21 12:21:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:21:25,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:25,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:25,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:21:25,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:25,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-09-21 12:21:25,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:25,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546896471] [2020-09-21 12:21:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:25,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:25,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:21:25,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-21 12:21:25,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:21:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:21:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:25,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:21:25,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:25,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:25,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:25,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:25,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:21:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:21:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:25,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:25,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:25,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:25,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:21:25,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:25,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:25,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:25,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:25,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:25,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:21:25,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:21:25,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546896471] [2020-09-21 12:21:25,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:25,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:21:25,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523203420] [2020-09-21 12:21:25,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:21:25,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:25,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:21:25,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:21:25,673 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 8 states. [2020-09-21 12:21:25,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:25,845 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2020-09-21 12:21:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:21:25,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-21 12:21:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:25,850 INFO L225 Difference]: With dead ends: 48 [2020-09-21 12:21:25,851 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:21:25,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:21:25,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:21:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-21 12:21:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 12:21:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2020-09-21 12:21:25,880 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 27 [2020-09-21 12:21:25,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:25,880 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2020-09-21 12:21:25,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:21:25,880 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2020-09-21 12:21:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-21 12:21:25,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:25,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:25,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:21:25,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:25,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-09-21 12:21:25,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:25,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522825706] [2020-09-21 12:21:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:26,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:26,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-21 12:21:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-21 12:21:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:21:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 12:21:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:26,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:26,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:26,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:26,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:26,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:21:26,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:26,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:26,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:21:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:26,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:26,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:26,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-21 12:21:26,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:21:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:26,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:26,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:26,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:26,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:26,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:21:26,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:26,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:26,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:26,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-21 12:21:26,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:26,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:26,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:26,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:26,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:21:26,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:26,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:26,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:26,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:21:26,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522825706] [2020-09-21 12:21:26,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:26,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:21:26,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842033267] [2020-09-21 12:21:26,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:21:26,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:26,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:21:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:21:26,709 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand 9 states. [2020-09-21 12:21:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:26,891 INFO L93 Difference]: Finished difference Result 79 states and 111 transitions. [2020-09-21 12:21:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:21:26,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-21 12:21:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:26,894 INFO L225 Difference]: With dead ends: 79 [2020-09-21 12:21:26,894 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 12:21:26,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:21:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 12:21:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2020-09-21 12:21:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-21 12:21:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-09-21 12:21:26,916 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 34 [2020-09-21 12:21:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:26,916 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-09-21 12:21:26,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:21:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-09-21 12:21:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 12:21:26,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:26,922 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:26,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:21:26,922 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:26,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:26,923 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-09-21 12:21:26,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:26,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032223107] [2020-09-21 12:21:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:27,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:21:27,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-21 12:21:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:21:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:21:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:27,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:27,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:27,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:27,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:21:27,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:27,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:27,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:27,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:27,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:27,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-21 12:21:27,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:21:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:27,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:27,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:27,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-21 12:21:27,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:27,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:27,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:27,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:27,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:27,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:27,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-21 12:21:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:27,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:27,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:27,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 12:21:27,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:27,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:28,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:28,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:28,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:21:28,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:28,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-21 12:21:28,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032223107] [2020-09-21 12:21:28,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:28,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:21:28,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218227882] [2020-09-21 12:21:28,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:21:28,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:21:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:21:28,061 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 11 states. [2020-09-21 12:21:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:28,278 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-09-21 12:21:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:21:28,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-21 12:21:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:28,281 INFO L225 Difference]: With dead ends: 56 [2020-09-21 12:21:28,281 INFO L226 Difference]: Without dead ends: 52 [2020-09-21 12:21:28,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:21:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-21 12:21:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-21 12:21:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-21 12:21:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-09-21 12:21:28,311 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 41 [2020-09-21 12:21:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:28,312 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-09-21 12:21:28,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:21:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-09-21 12:21:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-21 12:21:28,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:28,315 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:28,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:21:28,318 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-09-21 12:21:28,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:28,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153994494] [2020-09-21 12:21:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:28,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:28,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-21 12:21:28,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-21 12:21:28,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:21:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:21:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:28,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:28,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:28,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:28,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:28,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:21:28,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:28,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:29,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:21:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-21 12:21:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:21:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:21:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:29,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:29,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:29,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:29,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:29,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-21 12:21:29,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:21:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:29,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:29,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 12:21:29,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:29,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:29,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:29,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:29,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:29,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:21:29,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:29,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:29,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:29,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:29,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:21:29,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:29,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:29,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:29,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:29,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:21:29,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-21 12:21:29,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153994494] [2020-09-21 12:21:29,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:29,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:21:29,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035319290] [2020-09-21 12:21:29,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:21:29,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:21:29,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:21:29,676 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-09-21 12:21:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:29,850 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-09-21 12:21:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:21:29,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-21 12:21:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:29,852 INFO L225 Difference]: With dead ends: 62 [2020-09-21 12:21:29,853 INFO L226 Difference]: Without dead ends: 58 [2020-09-21 12:21:29,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:21:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-21 12:21:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2020-09-21 12:21:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:21:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-09-21 12:21:29,873 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 48 [2020-09-21 12:21:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:29,874 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-09-21 12:21:29,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:21:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-09-21 12:21:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 12:21:29,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:29,876 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:29,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:21:29,876 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:29,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-09-21 12:21:29,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:29,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361364386] [2020-09-21 12:21:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:29,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:30,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:30,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:21:30,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:30,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-09-21 12:21:30,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:21:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 12:21:30,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:30,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:30,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:30,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:21:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:30,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:30,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:30,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:21:30,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-21 12:21:30,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:21:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:21:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:30,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:31,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:21:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-21 12:21:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:21:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:21:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:31,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:31,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:31,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:31,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-21 12:21:31,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:21:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:31,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:31,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:31,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:31,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:31,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:21:31,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:31,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:31,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:31,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:31,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:21:31,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:31,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:31,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:31,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:31,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:31,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:31,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:21:31,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:31,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:31,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:31,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:31,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:21:31,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:31,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:31,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 28 [2020-09-21 12:21:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 13 proven. 81 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-21 12:21:31,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361364386] [2020-09-21 12:21:31,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:31,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 12:21:31,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271837175] [2020-09-21 12:21:31,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:21:31,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:31,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:21:31,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:21:31,624 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 13 states. [2020-09-21 12:21:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:31,835 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-09-21 12:21:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:21:31,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-09-21 12:21:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:31,837 INFO L225 Difference]: With dead ends: 68 [2020-09-21 12:21:31,837 INFO L226 Difference]: Without dead ends: 64 [2020-09-21 12:21:31,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2020-09-21 12:21:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-21 12:21:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-09-21 12:21:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-21 12:21:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-09-21 12:21:31,859 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 55 [2020-09-21 12:21:31,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:31,860 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-09-21 12:21:31,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:21:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-09-21 12:21:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-21 12:21:31,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:31,866 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:31,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:21:31,866 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:31,867 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-09-21 12:21:31,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:31,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590859957] [2020-09-21 12:21:31,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:32,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:32,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:21:32,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:32,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-21 12:21:32,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 12:21:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:21:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:32,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:32,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:32,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:32,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:21:32,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:32,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:32,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:32,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:21:32,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-21 12:21:32,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 12:21:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:21:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:33,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:21:33,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-21 12:21:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:21:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:21:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:33,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:33,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:33,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:33,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:21:33,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-21 12:21:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:21:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:21:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:33,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:33,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-21 12:21:33,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:21:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-21 12:21:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:33,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:33,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:33,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 12:21:33,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:33,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:33,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:33,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:33,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:33,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:21:33,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:33,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:33,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:33,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:33,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:33,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:21:33,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 15 proven. 102 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-21 12:21:33,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590859957] [2020-09-21 12:21:33,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:33,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 12:21:33,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112231719] [2020-09-21 12:21:33,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:21:33,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:33,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:21:33,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:21:33,879 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 13 states. [2020-09-21 12:21:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:34,082 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-09-21 12:21:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:21:34,083 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-09-21 12:21:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:34,084 INFO L225 Difference]: With dead ends: 74 [2020-09-21 12:21:34,084 INFO L226 Difference]: Without dead ends: 70 [2020-09-21 12:21:34,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:21:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-21 12:21:34,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2020-09-21 12:21:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-21 12:21:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-09-21 12:21:34,104 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 62 [2020-09-21 12:21:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:34,109 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-09-21 12:21:34,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:21:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-09-21 12:21:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 12:21:34,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:34,114 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:34,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:21:34,115 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:34,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:34,115 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-09-21 12:21:34,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:34,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750992414] [2020-09-21 12:21:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:34,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:34,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:21:34,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-09-21 12:21:34,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 12:21:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 12:21:34,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:34,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:34,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:34,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:34,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:21:34,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:35,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:35,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:21:35,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-21 12:21:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 12:21:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:21:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:35,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:35,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:21:35,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-21 12:21:35,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:21:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:21:35,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:35,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:36,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:36,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:21:36,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-21 12:21:36,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:21:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:21:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:36,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:36,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:21:36,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-21 12:21:36,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:21:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:21:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:36,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:36,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:36,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-21 12:21:36,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:21:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:36,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:36,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:36,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:36,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:36,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-21 12:21:36,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:36,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:36,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:36,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:36,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:36,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:21:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:36,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:37,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:37,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:21:37,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:37,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:37,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:21:37,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 30 proven. 122 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-21 12:21:37,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750992414] [2020-09-21 12:21:37,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:37,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 12:21:37,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608332413] [2020-09-21 12:21:37,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 12:21:37,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:37,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 12:21:37,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:21:37,083 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 14 states. [2020-09-21 12:21:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:37,287 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-09-21 12:21:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:21:37,288 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-09-21 12:21:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:37,290 INFO L225 Difference]: With dead ends: 57 [2020-09-21 12:21:37,290 INFO L226 Difference]: Without dead ends: 53 [2020-09-21 12:21:37,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-21 12:21:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-21 12:21:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-21 12:21:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-21 12:21:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-09-21 12:21:37,300 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 69 [2020-09-21 12:21:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:37,300 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-09-21 12:21:37,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 12:21:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-09-21 12:21:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-21 12:21:37,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:37,302 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:37,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:21:37,302 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:37,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:37,303 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-09-21 12:21:37,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:37,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976887019] [2020-09-21 12:21:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:38,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:38,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-21 12:21:38,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-09-21 12:21:38,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 12:21:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 12:21:38,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:38,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:38,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:38,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:21:38,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:38,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:38,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:38,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-21 12:21:38,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:38,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-09-21 12:21:38,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 12:21:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-21 12:21:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:39,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:21:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-09-21 12:21:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:21:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:21:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:39,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:39,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:21:39,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-09-21 12:21:39,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:21:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:21:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:21:40,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-21 12:21:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:21:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:21:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:40,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:40,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:40,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:21:40,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-21 12:21:40,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:21:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:21:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:40,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:40,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:40,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-21 12:21:40,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:21:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:40,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:40,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:40,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:40,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:40,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-21 12:21:40,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:40,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:40,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:21:40,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:40,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:40,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:40,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:21:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:40,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:40,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:40,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:40,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:21:40,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:40,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 145 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-09-21 12:21:40,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976887019] [2020-09-21 12:21:40,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:40,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 12:21:40,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767320649] [2020-09-21 12:21:40,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 12:21:40,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:40,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 12:21:40,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:21:40,862 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 15 states. [2020-09-21 12:21:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:41,080 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-09-21 12:21:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:21:41,080 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-09-21 12:21:41,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:41,081 INFO L225 Difference]: With dead ends: 60 [2020-09-21 12:21:41,082 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 12:21:41,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-21 12:21:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 12:21:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-21 12:21:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 12:21:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-09-21 12:21:41,101 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 76 [2020-09-21 12:21:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:41,102 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-09-21 12:21:41,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 12:21:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-09-21 12:21:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 12:21:41,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:41,106 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:41,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:21:41,106 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:41,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-09-21 12:21:41,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:41,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933192111] [2020-09-21 12:21:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:42,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:42,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:21:42,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 919 [2020-09-21 12:21:42,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:21:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 12:21:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:42,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:42,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:42,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:21:42,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:42,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:42,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:21:42,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:42,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-09-21 12:21:42,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:21:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-21 12:21:42,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:42,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:42,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:43,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:43,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-21 12:21:43,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-21 12:21:43,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:21:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-21 12:21:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:43,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:43,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:21:43,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-21 12:21:43,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:21:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:21:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:43,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:43,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:21:43,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:43,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-21 12:21:43,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:21:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:21:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:43,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:43,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:43,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:21:43,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-21 12:21:43,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:21:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:21:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:43,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:43,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:43,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:21:43,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-21 12:21:43,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:21:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:21:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:44,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:44,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:44,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:21:44,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:21:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:44,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:44,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-21 12:21:44,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:44,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:21:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:44,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:44,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:44,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:21:44,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:44,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:44,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:44,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:44,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:21:44,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 30 proven. 203 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-09-21 12:21:44,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933192111] [2020-09-21 12:21:44,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:44,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 12:21:44,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657926397] [2020-09-21 12:21:44,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 12:21:44,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:44,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 12:21:44,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:21:44,386 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 16 states. [2020-09-21 12:21:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:44,677 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-09-21 12:21:44,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 12:21:44,679 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 83 [2020-09-21 12:21:44,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:44,680 INFO L225 Difference]: With dead ends: 92 [2020-09-21 12:21:44,680 INFO L226 Difference]: Without dead ends: 88 [2020-09-21 12:21:44,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-21 12:21:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-21 12:21:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 64. [2020-09-21 12:21:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-21 12:21:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-09-21 12:21:44,703 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 83 [2020-09-21 12:21:44,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:44,704 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-09-21 12:21:44,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 12:21:44,704 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-09-21 12:21:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-21 12:21:44,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:44,705 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:44,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:21:44,705 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:44,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-09-21 12:21:44,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:44,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537974889] [2020-09-21 12:21:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:45,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:45,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-21 12:21:45,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-09-21 12:21:45,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 12:21:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-21 12:21:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:45,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:45,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:21:45,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:45,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:46,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:46,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:21:46,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-09-21 12:21:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 12:21:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 12:21:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:46,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:46,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:47,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:21:47,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-21 12:21:47,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:21:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-21 12:21:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:47,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:47,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:47,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-21 12:21:47,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-09-21 12:21:47,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:21:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-21 12:21:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:47,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:48,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:48,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:21:48,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-21 12:21:48,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:21:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:21:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:48,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:48,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:21:48,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-21 12:21:48,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:21:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:21:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:48,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:48,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:21:48,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-21 12:21:48,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:21:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:21:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:48,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:21:48,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-21 12:21:48,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:21:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:21:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:49,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:49,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:49,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:49,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-21 12:21:49,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:49,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:21:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:49,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:49,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:49,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 12:21:49,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:49,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:49,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:49,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:49,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:49,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:21:49,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:21:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:49,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:49,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:49,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:49,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:21:49,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 22 proven. 274 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-09-21 12:21:49,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537974889] [2020-09-21 12:21:49,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:49,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 12:21:49,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821209248] [2020-09-21 12:21:49,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 12:21:49,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:49,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 12:21:49,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:21:49,511 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 18 states. [2020-09-21 12:21:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:49,826 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-09-21 12:21:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 12:21:49,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-09-21 12:21:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:49,828 INFO L225 Difference]: With dead ends: 71 [2020-09-21 12:21:49,828 INFO L226 Difference]: Without dead ends: 67 [2020-09-21 12:21:49,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=565, Unknown=0, NotChecked=0, Total=870 [2020-09-21 12:21:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-21 12:21:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-09-21 12:21:49,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-21 12:21:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2020-09-21 12:21:49,836 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 90 [2020-09-21 12:21:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:49,836 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2020-09-21 12:21:49,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 12:21:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2020-09-21 12:21:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-21 12:21:49,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:49,838 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:49,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:21:49,838 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:49,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:49,838 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-09-21 12:21:49,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:49,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50859533] [2020-09-21 12:21:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:50,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:50,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-21 12:21:50,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:50,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-09-21 12:21:50,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-21 12:21:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-21 12:21:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:50,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:50,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:50,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:50,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:50,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:21:50,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:50,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:51,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:21:51,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-09-21 12:21:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-21 12:21:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-21 12:21:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:52,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:52,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:21:52,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:52,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-21 12:21:52,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:21:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 12:21:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:52,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:21:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-21 12:21:52,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:21:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-21 12:21:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:53,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-21 12:21:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-09-21 12:21:53,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:21:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-21 12:21:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:53,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:53,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:21:53,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-21 12:21:53,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:21:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:21:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:53,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:53,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:53,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:21:53,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-21 12:21:53,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:21:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:21:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:53,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:54,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:54,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:21:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-21 12:21:54,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:21:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:21:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:54,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:54,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:21:54,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:21:54,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:21:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:21:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:54,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:54,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:21:54,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 12:21:54,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:21:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:21:54,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:54,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:54,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:54,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:21:54,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:54,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:21:54,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:54,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:21:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:21:54,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:54,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:54,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 12:21:54,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:21:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:21:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:54,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:54,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:54,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:21:54,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:21:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:21:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:54,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:54,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:54,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:21:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:21:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:21:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:21:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 37 proven. 285 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2020-09-21 12:21:54,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50859533] [2020-09-21 12:21:54,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:21:54,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 12:21:54,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333351356] [2020-09-21 12:21:54,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 12:21:54,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:54,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 12:21:54,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:21:54,868 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 18 states. [2020-09-21 12:21:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:55,180 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-09-21 12:21:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 12:21:55,180 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 97 [2020-09-21 12:21:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:55,182 INFO L225 Difference]: With dead ends: 74 [2020-09-21 12:21:55,182 INFO L226 Difference]: Without dead ends: 70 [2020-09-21 12:21:55,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-09-21 12:21:55,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-21 12:21:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-21 12:21:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-21 12:21:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-09-21 12:21:55,189 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 97 [2020-09-21 12:21:55,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:55,190 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-09-21 12:21:55,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 12:21:55,190 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-09-21 12:21:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-21 12:21:55,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:55,191 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:55,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:21:55,191 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:55,192 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-09-21 12:21:55,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:55,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423547473] [2020-09-21 12:21:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:55,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:56,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:56,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:21:56,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:21:56,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 12:21:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:21:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-21 12:21:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:56,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:56,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:56,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:21:56,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:56,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:21:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:57,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-21 12:21:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:21:57,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 12:21:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-21 12:21:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:58,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:58,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:21:58,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-21 12:21:58,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:21:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-21 12:21:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:58,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:58,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:58,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:21:58,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-21 12:21:58,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:21:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 12:21:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:21:58,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-21 12:21:58,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:21:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-21 12:21:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:58,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:59,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:59,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-21 12:21:59,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:59,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-21 12:21:59,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:21:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-21 12:21:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:59,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:59,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:21:59,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-21 12:21:59,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:59,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:21:59,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:59,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:21:59,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:21:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:21:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:00,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:00,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:22:00,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:00,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-09-21 12:22:00,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:22:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:22:00,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:00,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:00,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:22:00,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:00,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-21 12:22:00,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:00,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:22:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:22:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:00,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:00,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:22:00,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-21 12:22:00,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:22:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:22:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:22:00,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-21 12:22:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:22:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:22:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:00,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:01,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:22:01,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:01,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-21 12:22:01,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:22:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:22:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:01,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:01,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:01,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:22:01,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:01,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:22:01,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:22:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:22:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:01,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:01,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:01,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:22:01,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:22:01,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:22:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:22:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:01,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:01,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:01,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:22:01,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:01,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:01,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:01,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 78 proven. 307 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-09-21 12:22:01,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423547473] [2020-09-21 12:22:01,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:22:01,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 12:22:01,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792189008] [2020-09-21 12:22:01,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 12:22:01,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 12:22:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:22:01,491 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 19 states. [2020-09-21 12:22:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:01,835 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2020-09-21 12:22:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-21 12:22:01,837 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2020-09-21 12:22:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:01,839 INFO L225 Difference]: With dead ends: 110 [2020-09-21 12:22:01,839 INFO L226 Difference]: Without dead ends: 106 [2020-09-21 12:22:01,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2020-09-21 12:22:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-21 12:22:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2020-09-21 12:22:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 12:22:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-09-21 12:22:01,861 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 104 [2020-09-21 12:22:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:01,862 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-09-21 12:22:01,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-21 12:22:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-09-21 12:22:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-21 12:22:01,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:01,868 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:22:01,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:22:01,869 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:01,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-09-21 12:22:01,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:01,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296593524] [2020-09-21 12:22:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:01,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:02,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-21 12:22:02,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:22:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-21 12:22:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:22:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-21 12:22:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:02,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:02,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:02,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:02,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:22:02,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:03,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:03,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-21 12:22:03,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-09-21 12:22:03,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-21 12:22:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-21 12:22:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:04,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:04,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-21 12:22:04,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:04,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-09-21 12:22:04,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 12:22:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-21 12:22:04,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:05,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:05,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:22:05,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:22:05,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:22:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-21 12:22:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:05,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:05,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:22:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-21 12:22:05,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:22:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 12:22:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:06,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:06,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:22:06,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:06,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-21 12:22:06,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:22:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-21 12:22:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:06,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:06,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-21 12:22:06,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-09-21 12:22:06,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:22:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-21 12:22:06,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:07,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:07,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:22:07,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:07,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-21 12:22:07,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:22:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:22:07,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:07,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:07,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:07,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:22:07,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:07,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-21 12:22:07,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:22:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:22:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:07,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:07,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:22:07,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-21 12:22:07,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:22:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:22:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:22:08,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-21 12:22:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:22:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:22:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:08,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:08,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:08,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:22:08,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:22:08,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:22:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:22:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:08,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:08,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:08,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:22:08,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:08,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-21 12:22:08,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:22:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:22:08,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:08,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:08,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:08,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:08,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:22:08,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:22:08,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:08,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:22:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:22:08,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:08,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:08,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:08,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:22:08,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:08,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:22:08,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:22:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:22:08,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:08,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:08,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:08,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:08,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:22:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 18 proven. 400 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-09-21 12:22:08,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296593524] [2020-09-21 12:22:08,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:22:08,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-21 12:22:08,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037862280] [2020-09-21 12:22:08,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-21 12:22:08,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:08,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-21 12:22:08,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:22:08,680 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 21 states. [2020-09-21 12:22:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:09,030 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-09-21 12:22:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 12:22:09,031 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-09-21 12:22:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:09,033 INFO L225 Difference]: With dead ends: 116 [2020-09-21 12:22:09,033 INFO L226 Difference]: Without dead ends: 112 [2020-09-21 12:22:09,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=449, Invalid=811, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 12:22:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-21 12:22:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2020-09-21 12:22:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 12:22:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-09-21 12:22:09,041 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 111 [2020-09-21 12:22:09,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:09,041 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-09-21 12:22:09,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-21 12:22:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-09-21 12:22:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-21 12:22:09,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:09,043 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:22:09,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 12:22:09,043 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:09,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:09,044 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-09-21 12:22:09,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:09,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504573902] [2020-09-21 12:22:09,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:10,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:10,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 12:22:10,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:10,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-21 12:22:10,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 12:22:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:22:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-21 12:22:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:10,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:10,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:10,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:22:10,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:10,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:11,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:11,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-21 12:22:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:22:11,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 12:22:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-21 12:22:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:11,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:11,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:12,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:12,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-21 12:22:12,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:22:12,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-21 12:22:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-21 12:22:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:13,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:13,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-21 12:22:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-09-21 12:22:13,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 12:22:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-21 12:22:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:13,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:13,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:13,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:22:13,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-09-21 12:22:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:22:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-21 12:22:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:14,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:14,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:14,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:22:14,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:14,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-21 12:22:14,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:22:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 12:22:14,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:15,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-09-21 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-21 12:22:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:15,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:15,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:15,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-21 12:22:15,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-21 12:22:15,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:22:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-21 12:22:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:16,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:16,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:22:16,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-21 12:22:16,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:22:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:22:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:16,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:16,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:16,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:22:16,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 12:22:16,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:22:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:22:16,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:16,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:16,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:22:16,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:16,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-21 12:22:16,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:22:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:22:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:16,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:16,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:16,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:22:16,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 12:22:16,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:22:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:22:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:16,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:16,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:16,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:16,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:22:16,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-21 12:22:16,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:22:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:22:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:17,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:22:17,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:22:17,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:22:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:22:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:22:17,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:22:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:22:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:22:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:17,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:17,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:17,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:17,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:22:17,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:17,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:22:17,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:22:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:22:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:17,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:17,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:17,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:17,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:22:17,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 60 proven. 453 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-09-21 12:22:17,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504573902] [2020-09-21 12:22:17,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:22:17,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-21 12:22:17,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980036857] [2020-09-21 12:22:17,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-21 12:22:17,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:17,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-21 12:22:17,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:22:17,364 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 21 states.