/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:04:49,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:04:49,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:04:49,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:04:49,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:04:49,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:04:49,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:04:49,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:04:49,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:04:49,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:04:49,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:04:49,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:04:49,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:04:49,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:04:49,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:04:49,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:04:49,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:04:49,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:04:49,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:04:49,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:04:49,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:04:49,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:04:49,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:04:49,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:04:49,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:04:49,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:04:49,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:04:49,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:04:49,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:04:49,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:04:49,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:04:49,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:04:49,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:04:49,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:04:49,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:04:49,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:04:49,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:04:49,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:04:49,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:04:49,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:04:49,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:04:49,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:04:49,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:04:49,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:04:49,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:04:49,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:04:49,502 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:04:49,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:04:49,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:04:49,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:04:49,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:04:49,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:04:49,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:04:49,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:04:49,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:04:49,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:04:49,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:04:49,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:04:49,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:04:49,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:04:49,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:04:49,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:04:49,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:04:49,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:04:49,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:04:49,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:04:49,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:04:49,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:04:49,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:04:49,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:04:49,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:04:49,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;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;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;log-additional-information=true; [2020-09-24 17:04:49,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:04:49,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:04:49,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:04:49,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:04:49,959 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:04:49,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2020-09-24 17:04:50,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3ffd4ca3/6fe02f946a5740c9af7f3ffe952472d3/FLAGb1033d106 [2020-09-24 17:04:50,535 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:04:50,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2020-09-24 17:04:50,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3ffd4ca3/6fe02f946a5740c9af7f3ffe952472d3/FLAGb1033d106 [2020-09-24 17:04:50,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3ffd4ca3/6fe02f946a5740c9af7f3ffe952472d3 [2020-09-24 17:04:50,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:04:50,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:04:50,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:04:50,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:04:50,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:04:50,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:04:50" (1/1) ... [2020-09-24 17:04:50,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df9f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:50, skipping insertion in model container [2020-09-24 17:04:50,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:04:50" (1/1) ... [2020-09-24 17:04:50,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:04:50,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:04:51,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:04:51,178 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:04:51,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:04:51,215 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:04:51,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51 WrapperNode [2020-09-24 17:04:51,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:04:51,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:04:51,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:04:51,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:04:51,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... [2020-09-24 17:04:51,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:04:51,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:04:51,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:04:51,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:04:51,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:04:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:04:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:04:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 17:04:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:04:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:04:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:04:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 17:04:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:04:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:04:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:04:51,579 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:04:51,580 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:04:51,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:04:51 BoogieIcfgContainer [2020-09-24 17:04:51,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:04:51,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:04:51,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:04:51,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:04:51,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:04:50" (1/3) ... [2020-09-24 17:04:51,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266a3065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:04:51, skipping insertion in model container [2020-09-24 17:04:51,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:04:51" (2/3) ... [2020-09-24 17:04:51,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266a3065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:04:51, skipping insertion in model container [2020-09-24 17:04:51,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:04:51" (3/3) ... [2020-09-24 17:04:51,598 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2020-09-24 17:04:51,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:04:51,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:04:51,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:04:51,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:04:51,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:04:51,662 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:04:51,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:04:51,663 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:04:51,663 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:04:51,663 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:04:51,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:04:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-24 17:04:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 17:04:51,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:51,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:51,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:51,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:51,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-24 17:04:51,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:51,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290936164] [2020-09-24 17:04:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:51,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:51,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:04:51,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 17:04:51,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:04:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:04:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:04:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:51,940 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:51,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:51,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:51,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:04:51,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:51,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:51,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:51,993 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:51,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:51,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:51,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:04:51,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:04:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:04:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:04:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:04:52,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290936164] [2020-09-24 17:04:52,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:04:52,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:04:52,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694613560] [2020-09-24 17:04:52,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:04:52,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:52,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:04:52,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:04:52,071 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-24 17:04:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:52,167 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 17:04:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:04:52,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 17:04:52,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:52,184 INFO L225 Difference]: With dead ends: 37 [2020-09-24 17:04:52,184 INFO L226 Difference]: Without dead ends: 23 [2020-09-24 17:04:52,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:04:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-24 17:04:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-24 17:04:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-24 17:04:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-24 17:04:52,244 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-24 17:04:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:52,244 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-24 17:04:52,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:04:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-24 17:04:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 17:04:52,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:52,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:52,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:04:52,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:52,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-24 17:04:52,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:52,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133408565] [2020-09-24 17:04:52,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,450 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:04:52,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:52,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 17:04:52,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:04:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:04:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:04:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:52,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:52,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:52,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:04:52,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:52,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:52,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 17:04:52,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:04:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:04:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:04:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:04:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:52,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:52,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:52,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:04:52,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:04:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:04:52,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133408565] [2020-09-24 17:04:52,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:52,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:04:52,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778039243] [2020-09-24 17:04:52,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:04:52,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:52,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:04:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:04:52,727 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-24 17:04:52,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:52,794 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-24 17:04:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:04:52,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 17:04:52,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:52,797 INFO L225 Difference]: With dead ends: 34 [2020-09-24 17:04:52,797 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 17:04:52,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:04:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 17:04:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 17:04:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 17:04:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-24 17:04:52,814 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-24 17:04:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:52,815 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-24 17:04:52,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:04:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-24 17:04:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 17:04:52,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:52,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:52,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:04:52,819 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-24 17:04:52,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:52,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606571212] [2020-09-24 17:04:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:04:53,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 17:04:53,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:04:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:04:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:04:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:04:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:53,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:04:53,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:04:53,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 17:04:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:04:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:04:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 17:04:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:53,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:53,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 17:04:53,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:04:53,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:53,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:04:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:04:53,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:04:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 17:04:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 17:04:53,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606571212] [2020-09-24 17:04:53,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:53,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 17:04:53,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672281931] [2020-09-24 17:04:53,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:04:53,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:53,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:04:53,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:04:53,384 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-09-24 17:04:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:53,471 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 17:04:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:04:53,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-24 17:04:53,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:53,477 INFO L225 Difference]: With dead ends: 39 [2020-09-24 17:04:53,477 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 17:04:53,478 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 [2020-09-24 17:04:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 17:04:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-24 17:04:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 17:04:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-24 17:04:53,493 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-24 17:04:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:53,493 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-24 17:04:53,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:04:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-24 17:04:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 17:04:53,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:53,498 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:53,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:04:53,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:53,499 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-24 17:04:53,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:53,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770380563] [2020-09-24 17:04:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,675 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 17:04:53,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 17:04:53,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:04:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:04:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:04:53,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:53,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:53,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:04:53,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:04:53,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 17:04:53,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:04:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:04:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 17:04:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:53,985 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:53,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:04:53,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 17:04:53,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:04:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:04:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,074 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:54,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 17:04:54,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:04:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:04:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:54,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:04:54,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:04:54,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:04:54,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770380563] [2020-09-24 17:04:54,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:54,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:04:54,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618158812] [2020-09-24 17:04:54,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:04:54,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:54,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:04:54,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:04:54,152 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 10 states. [2020-09-24 17:04:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:54,245 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-24 17:04:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:04:54,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-24 17:04:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:54,247 INFO L225 Difference]: With dead ends: 44 [2020-09-24 17:04:54,247 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 17:04:54,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:04:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 17:04:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 17:04:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:04:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 17:04:54,256 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-24 17:04:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:54,257 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 17:04:54,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:04:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 17:04:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 17:04:54,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:54,259 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:54,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:04:54,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:54,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-24 17:04:54,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:54,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995646276] [2020-09-24 17:04:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,471 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:04:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-24 17:04:54,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:04:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:04:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:04:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:54,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,490 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:54,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:04:54,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:54,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:54,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:04:54,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 17:04:54,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:04:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:04:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 17:04:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,841 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:04:54,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 17:04:54,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:04:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:04:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:54,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:54,945 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:54,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:04:54,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 17:04:54,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:04:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:04:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:54,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:55,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 17:04:55,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:04:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:04:55,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:55,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,051 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:55,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:04:55,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:04:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 17:04:55,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995646276] [2020-09-24 17:04:55,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:55,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:04:55,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781088745] [2020-09-24 17:04:55,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:04:55,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:55,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:04:55,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:04:55,078 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 10 states. [2020-09-24 17:04:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:55,182 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-24 17:04:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:04:55,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-24 17:04:55,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:55,184 INFO L225 Difference]: With dead ends: 49 [2020-09-24 17:04:55,184 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 17:04:55,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:04:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 17:04:55,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-24 17:04:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 17:04:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-24 17:04:55,192 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-24 17:04:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:55,193 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-24 17:04:55,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:04:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-24 17:04:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 17:04:55,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:55,195 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:55,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:04:55,196 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:55,196 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-24 17:04:55,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:55,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286495664] [2020-09-24 17:04:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 17:04:55,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-24 17:04:55,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:04:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:04:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:04:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,529 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:55,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:04:55,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:55,831 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:55,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:04:55,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:55,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-24 17:04:55,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:04:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:04:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 17:04:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:04:56,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 17:04:56,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:04:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:04:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:56,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:04:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 17:04:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:04:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:04:56,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:56,418 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:56,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:04:56,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 17:04:56,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:04:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:04:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:56,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:56,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:56,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 17:04:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:04:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:04:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:56,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:56,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:56,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:04:56,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:04:56,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 5 proven. 68 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 17:04:56,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286495664] [2020-09-24 17:04:56,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:56,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 17:04:56,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832109528] [2020-09-24 17:04:56,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 17:04:56,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:56,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 17:04:56,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:04:56,588 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 12 states. [2020-09-24 17:04:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:56,722 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-24 17:04:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:04:56,724 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-09-24 17:04:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:56,725 INFO L225 Difference]: With dead ends: 54 [2020-09-24 17:04:56,725 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 17:04:56,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:04:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 17:04:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 17:04:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 17:04:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-24 17:04:56,740 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-24 17:04:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:56,742 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-24 17:04:56,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 17:04:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-24 17:04:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 17:04:56,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:56,747 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:56,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:04:56,747 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:56,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-24 17:04:56,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:56,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075030793] [2020-09-24 17:04:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,126 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:04:57,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-24 17:04:57,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:04:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:04:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 17:04:57,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:04:57,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:57,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:04:57,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-24 17:04:57,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:04:57,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:04:57,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 17:04:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:57,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:57,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:04:57,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-24 17:04:57,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:04:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:04:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:57,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:58,032 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:58,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:04:58,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:58,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 17:04:58,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:04:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:04:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:58,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:58,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:04:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 17:04:58,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:04:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:04:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:58,332 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:58,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:04:58,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 17:04:58,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:04:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:04:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:04:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:58,405 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:58,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:04:58,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 17:04:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:04:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:04:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:58,454 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:58,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:04:58,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:04:58,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:04:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:04:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 5 proven. 105 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 17:04:58,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075030793] [2020-09-24 17:04:58,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:04:58,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:04:58,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572088916] [2020-09-24 17:04:58,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:04:58,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:04:58,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:04:58,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:04:58,496 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 13 states. [2020-09-24 17:04:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:04:58,673 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 17:04:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:04:58,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-09-24 17:04:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:04:58,676 INFO L225 Difference]: With dead ends: 59 [2020-09-24 17:04:58,676 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 17:04:58,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:04:58,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 17:04:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 17:04:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 17:04:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-24 17:04:58,695 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-24 17:04:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:04:58,696 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-24 17:04:58,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:04:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-24 17:04:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 17:04:58,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:04:58,698 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:04:58,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:04:58,698 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:04:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:04:58,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-24 17:04:58,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:04:58,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183622360] [2020-09-24 17:04:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:04:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:59,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 17:04:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-24 17:04:59,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:04:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:04:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 17:04:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:59,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:04:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:59,203 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:59,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:04:59,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:59,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:04:59,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:59,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:04:59,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:04:59,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:04:59,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:59,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:04:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:59,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:04:59,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:04:59,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:04:59,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:04:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-24 17:04:59,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:04:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:04:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:04:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 17:04:59,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:04:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:04:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:04:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:00,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-24 17:05:00,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,305 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:00,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-24 17:05:00,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:00,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 17:05:00,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:00,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,647 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:00,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 17:05:00,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:00,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,746 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:00,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 17:05:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,807 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:00,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 17:05:00,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:00,837 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:00,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:00,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:05:00,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:00,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 10 proven. 136 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-24 17:05:00,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183622360] [2020-09-24 17:05:00,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:00,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:05:00,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242675810] [2020-09-24 17:05:00,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:05:00,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:00,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:05:00,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:05:00,875 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 13 states. [2020-09-24 17:05:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:01,036 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-24 17:05:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:05:01,038 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-09-24 17:05:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:01,039 INFO L225 Difference]: With dead ends: 64 [2020-09-24 17:05:01,039 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 17:05:01,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 17:05:01,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 17:05:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 17:05:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 17:05:01,053 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-24 17:05:01,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:01,054 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 17:05:01,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:05:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 17:05:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 17:05:01,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:01,057 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:01,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:05:01,057 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:01,059 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-24 17:05:01,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:01,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454242671] [2020-09-24 17:05:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:01,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:01,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-24 17:05:01,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-09-24 17:05:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:05:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:05:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:01,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:01,605 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:01,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:01,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:01,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:05:01,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:02,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:02,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:02,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-24 17:05:02,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:05:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:02,556 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:02,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:02,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-09-24 17:05:02,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:02,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:02,904 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:02,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:02,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:02,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-24 17:05:02,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:02,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:03,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 17:05:03,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:03,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:03,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,387 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:03,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 17:05:03,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:03,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,545 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:03,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:03,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 17:05:03,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:03,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 17:05:03,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:03,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,703 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:03,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 17:05:03,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:03,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:03,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:03,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:03,738 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:03,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:03,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:05:03,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 16 proven. 166 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-24 17:05:03,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454242671] [2020-09-24 17:05:03,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:03,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 17:05:03,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210618750] [2020-09-24 17:05:03,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:05:03,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:03,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:05:03,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:05:03,797 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 14 states. [2020-09-24 17:05:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:03,971 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-24 17:05:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:05:03,971 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-09-24 17:05:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:03,978 INFO L225 Difference]: With dead ends: 69 [2020-09-24 17:05:03,978 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 17:05:03,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:05:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 17:05:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-24 17:05:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 17:05:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-24 17:05:03,990 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-24 17:05:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:03,991 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-24 17:05:03,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:05:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-24 17:05:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 17:05:03,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:03,992 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:03,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:05:03,995 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-24 17:05:03,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:03,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517783230] [2020-09-24 17:05:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:04,586 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:04,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 17:05:04,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-09-24 17:05:04,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:05:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:04,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:04,613 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:04,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:04,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:04,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:05:04,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:04,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:05,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-24 17:05:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:05:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 17:05:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:05,846 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:05,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-09-24 17:05:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 17:05:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:05,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:06,286 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:06,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:06,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-09-24 17:05:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:06,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:06,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:06,627 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:06,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:06,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-24 17:05:06,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:06,916 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:06,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:06,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-24 17:05:06,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:06,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:07,089 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:07,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:07,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 17:05:07,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:07,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:07,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:07,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 17:05:07,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:07,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:07,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:07,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:07,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:07,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 17:05:07,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:07,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:07,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:07,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:07,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:07,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 17:05:07,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:07,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:07,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:07,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:07,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:07,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:07,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:07,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:05:07,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 33 proven. 210 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-24 17:05:07,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517783230] [2020-09-24 17:05:07,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:07,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:05:07,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654634565] [2020-09-24 17:05:07,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:05:07,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:07,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:05:07,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:05:07,496 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 15 states. [2020-09-24 17:05:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:07,667 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-24 17:05:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:05:07,668 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-09-24 17:05:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:07,669 INFO L225 Difference]: With dead ends: 74 [2020-09-24 17:05:07,669 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 17:05:07,670 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 [2020-09-24 17:05:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 17:05:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 17:05:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 17:05:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-24 17:05:07,689 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-24 17:05:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:07,693 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-24 17:05:07,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:05:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-24 17:05:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 17:05:07,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:07,697 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:07,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:05:07,697 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:07,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-24 17:05:07,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:07,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835186693] [2020-09-24 17:05:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:08,404 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:08,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 17:05:08,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:08,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-09-24 17:05:08,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 17:05:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 17:05:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:08,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:08,439 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:08,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:08,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:08,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:08,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:05:09,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-09-24 17:05:09,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 17:05:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 17:05:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:09,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:09,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-24 17:05:09,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 17:05:09,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:09,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:09,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:10,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-24 17:05:10,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 17:05:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,529 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:10,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-24 17:05:10,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:10,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-24 17:05:10,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,030 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:11,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 17:05:11,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,207 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:11,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 17:05:11,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:11,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,333 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:11,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 17:05:11,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:11,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,426 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:05:11,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,481 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:11,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:05:11,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:11,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:05:11,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:11,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 24 proven. 266 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-09-24 17:05:11,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835186693] [2020-09-24 17:05:11,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:11,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:05:11,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963018043] [2020-09-24 17:05:11,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:05:11,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:11,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:05:11,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:05:11,606 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 16 states. [2020-09-24 17:05:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:11,801 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 17:05:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 17:05:11,802 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-09-24 17:05:11,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:11,803 INFO L225 Difference]: With dead ends: 79 [2020-09-24 17:05:11,803 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 17:05:11,805 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 [2020-09-24 17:05:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 17:05:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-24 17:05:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 17:05:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-24 17:05:11,818 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-24 17:05:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:11,819 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-24 17:05:11,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:05:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-24 17:05:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 17:05:11,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:11,820 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:11,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:05:11,821 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-24 17:05:11,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:11,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251061324] [2020-09-24 17:05:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:12,496 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:12,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 17:05:12,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-09-24 17:05:12,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 17:05:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 17:05:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:12,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:12,518 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:12,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:12,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:12,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:12,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:13,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:13,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 17:05:13,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:13,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-09-24 17:05:13,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 17:05:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 17:05:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:13,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:14,027 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:14,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:05:14,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:14,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-09-24 17:05:14,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 17:05:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:14,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:14,666 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:14,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:14,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-09-24 17:05:14,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 17:05:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:14,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,126 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:15,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-09-24 17:05:15,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 17:05:15,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-09-24 17:05:15,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:15,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,920 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:15,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-24 17:05:15,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:15,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,152 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:16,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 17:05:16,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:16,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 17:05:16,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:16,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 17:05:16,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:16,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,566 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:16,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:05:16,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,626 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:16,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 17:05:16,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:16,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,676 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:16,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:05:16,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:05:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 20 proven. 298 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-09-24 17:05:16,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251061324] [2020-09-24 17:05:16,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:16,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 17:05:16,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357732055] [2020-09-24 17:05:16,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 17:05:16,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:16,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 17:05:16,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-24 17:05:16,776 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 17 states. [2020-09-24 17:05:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:16,962 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-24 17:05:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 17:05:16,963 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 104 [2020-09-24 17:05:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:16,964 INFO L225 Difference]: With dead ends: 84 [2020-09-24 17:05:16,964 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 17:05:16,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-24 17:05:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 17:05:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-24 17:05:16,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 17:05:16,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-24 17:05:16,974 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-24 17:05:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:16,975 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-24 17:05:16,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 17:05:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-24 17:05:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 17:05:16,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:16,976 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:16,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:05:16,977 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:16,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-24 17:05:16,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:16,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12235302] [2020-09-24 17:05:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 17:05:17,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-09-24 17:05:17,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 17:05:17,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:17,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 17:05:17,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:17,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,821 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:17,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:17,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:17,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:17,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 17:05:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-09-24 17:05:18,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 17:05:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 17:05:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 17:05:19,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-24 17:05:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:05:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 17:05:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:19,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:20,160 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:20,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:05:20,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-24 17:05:20,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 17:05:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:20,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:20,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:20,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:20,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:20,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:20,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-24 17:05:20,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 17:05:20,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:20,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,040 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:21,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-24 17:05:21,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 17:05:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:21,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-24 17:05:21,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:21,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:21,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:21,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,731 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:21,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-24 17:05:21,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:22,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 17:05:22,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:22,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,271 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:22,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-24 17:05:22,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:22,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,431 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:22,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 17:05:22,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:22,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:22,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:22,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 17:05:22,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:22,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:22,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:22,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 17:05:22,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:05:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:22,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:05:22,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 22 proven. 406 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-09-24 17:05:22,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12235302] [2020-09-24 17:05:22,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:22,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 17:05:22,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527217364] [2020-09-24 17:05:22,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 17:05:22,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:22,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 17:05:22,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:05:22,756 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 19 states. [2020-09-24 17:05:22,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:22,971 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-09-24 17:05:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 17:05:22,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 112 [2020-09-24 17:05:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:22,973 INFO L225 Difference]: With dead ends: 89 [2020-09-24 17:05:22,973 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 17:05:22,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=643, Unknown=0, NotChecked=0, Total=992 [2020-09-24 17:05:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 17:05:22,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-24 17:05:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 17:05:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-09-24 17:05:22,980 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 112 [2020-09-24 17:05:22,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:22,980 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-09-24 17:05:22,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 17:05:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-09-24 17:05:22,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 17:05:22,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:22,982 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:22,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:05:22,982 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:22,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1612559463, now seen corresponding path program 13 times [2020-09-24 17:05:22,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:22,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837510952] [2020-09-24 17:05:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,887 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-24 17:05:23,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-09-24 17:05:23,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 17:05:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 17:05:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,913 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:23,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:23,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:23,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:23,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,774 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 17:05:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-09-24 17:05:24,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 17:05:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 17:05:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:25,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:25,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 17:05:25,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:25,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-09-24 17:05:25,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 17:05:25,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 17:05:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:26,390 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 17:05:26,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-09-24 17:05:26,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:05:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 17:05:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:26,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:26,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:26,958 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:26,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:05:26,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-24 17:05:26,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 17:05:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:27,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:27,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:27,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:27,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-24 17:05:27,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 17:05:27,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:27,860 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:27,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:27,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-24 17:05:27,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 17:05:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:27,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:28,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-24 17:05:28,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:28,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,458 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:28,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-24 17:05:28,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:28,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:28,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:28,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 17:05:28,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,843 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:28,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 17:05:28,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,965 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:28,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 17:05:28,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:28,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,060 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 17:05:29,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:29,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:29,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 17:05:29,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,175 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:29,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:05:29,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 44 proven. 460 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-09-24 17:05:29,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837510952] [2020-09-24 17:05:29,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:29,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 17:05:29,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85526321] [2020-09-24 17:05:29,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 17:05:29,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:29,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 17:05:29,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:05:29,258 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 19 states. [2020-09-24 17:05:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:29,521 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-09-24 17:05:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:05:29,522 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 120 [2020-09-24 17:05:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:29,523 INFO L225 Difference]: With dead ends: 94 [2020-09-24 17:05:29,523 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 17:05:29,524 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 [2020-09-24 17:05:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 17:05:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-09-24 17:05:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 17:05:29,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-09-24 17:05:29,534 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 120 [2020-09-24 17:05:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:29,535 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-09-24 17:05:29,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 17:05:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-09-24 17:05:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-24 17:05:29,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:29,542 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:29,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:05:29,542 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 996432753, now seen corresponding path program 14 times [2020-09-24 17:05:29,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:29,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447610115] [2020-09-24 17:05:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,504 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 17:05:30,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-09-24 17:05:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 17:05:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 17:05:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,526 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:30,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,471 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:31,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 17:05:31,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-09-24 17:05:31,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 17:05:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-24 17:05:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 17:05:32,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-09-24 17:05:32,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:05:32,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:32,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 17:05:32,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,147 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 17:05:33,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-09-24 17:05:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 17:05:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 17:05:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,766 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 17:05:33,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-09-24 17:05:33,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:05:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 17:05:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,351 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:05:34,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-09-24 17:05:34,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 17:05:34,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,838 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:34,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-09-24 17:05:34,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 17:05:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,229 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:35,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-24 17:05:35,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 17:05:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:35,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-24 17:05:35,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:35,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,822 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:35,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-24 17:05:35,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-24 17:05:36,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,205 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:36,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 17:05:36,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:36,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,326 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:36,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 17:05:36,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:36,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,412 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:36,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 17:05:36,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:36,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 17:05:36,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:36,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,534 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:36,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:05:36,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:36,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 31 proven. 549 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-09-24 17:05:36,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447610115] [2020-09-24 17:05:36,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:36,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 17:05:36,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4275138] [2020-09-24 17:05:36,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 17:05:36,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:36,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 17:05:36,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:36,631 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 21 states. [2020-09-24 17:05:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:36,909 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-09-24 17:05:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:05:36,910 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 128 [2020-09-24 17:05:36,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:36,911 INFO L225 Difference]: With dead ends: 99 [2020-09-24 17:05:36,912 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 17:05:36,913 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 [2020-09-24 17:05:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 17:05:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-09-24 17:05:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 17:05:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-09-24 17:05:36,921 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 128 [2020-09-24 17:05:36,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:36,921 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-09-24 17:05:36,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 17:05:36,922 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-09-24 17:05:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 17:05:36,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:36,923 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:36,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 17:05:36,924 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 418248103, now seen corresponding path program 15 times [2020-09-24 17:05:36,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:36,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866235734] [2020-09-24 17:05:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:38,095 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:38,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 17:05:38,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-09-24 17:05:38,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 17:05:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 17:05:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:38,117 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:38,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:38,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:38,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:05:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:39,242 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 17:05:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:39,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-09-24 17:05:39,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 17:05:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-24 17:05:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,277 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 17:05:40,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-09-24 17:05:40,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 17:05:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-24 17:05:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,209 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 17:05:41,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:41,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-09-24 17:05:41,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:05:41,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:41,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 17:05:41,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,974 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:41,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 17:05:41,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-09-24 17:05:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 17:05:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 17:05:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,639 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 17:05:42,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-09-24 17:05:42,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:05:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 17:05:42,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:42,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:43,221 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:43,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:05:43,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-09-24 17:05:43,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 17:05:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:43,700 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:43,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-24 17:05:43,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 17:05:43,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:44,102 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:44,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:05:44,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:44,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-24 17:05:44,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 17:05:44,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:44,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:44,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:44,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:05:44,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:44,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-24 17:05:44,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:44,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:44,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:44,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:44,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 17:05:44,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:05:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:44,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:44,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 17:05:44,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:44,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,114 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:05:45,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 17:05:45,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:05:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,248 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:05:45,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 17:05:45,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:45,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:05:45,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 17:05:45,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:05:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:05:45,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 17:05:45,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,433 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:45,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:05:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 24 proven. 623 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-09-24 17:05:45,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866235734] [2020-09-24 17:05:45,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:45,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 17:05:45,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198701145] [2020-09-24 17:05:45,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 17:05:45,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:45,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 17:05:45,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:45,522 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 21 states. [2020-09-24 17:05:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:45,811 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2020-09-24 17:05:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:05:45,812 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-09-24 17:05:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:45,813 INFO L225 Difference]: With dead ends: 104 [2020-09-24 17:05:45,813 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 17:05:45,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 17:05:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 17:05:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-24 17:05:45,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-24 17:05:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-09-24 17:05:45,819 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 136 [2020-09-24 17:05:45,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:45,819 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-09-24 17:05:45,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 17:05:45,819 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-09-24 17:05:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 17:05:45,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:45,821 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:45,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 17:05:45,821 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:45,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2106505265, now seen corresponding path program 16 times [2020-09-24 17:05:45,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:45,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104719534] [2020-09-24 17:05:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking...