/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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/fibo_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:01:18,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:01:18,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:01:18,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:01:18,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:01:18,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:01:18,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:01:18,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:01:18,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:01:18,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:01:18,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:01:18,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:01:18,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:01:18,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:01:18,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:01:18,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:01:18,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:01:18,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:01:18,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:01:18,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:01:18,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:01:18,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:01:18,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:01:18,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:01:18,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:01:18,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:01:18,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:01:18,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:01:18,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:01:18,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:01:18,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:01:18,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:01:18,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:01:18,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:01:18,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:01:18,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:01:18,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:01:18,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:01:18,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:01:18,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:01:18,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:01:18,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:01:18,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:01:18,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:01:18,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:01:18,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:01:18,233 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:01:18,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:01:18,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:01:18,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:01:18,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:01:18,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:01:18,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:01:18,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:01:18,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:01:18,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:01:18,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:01:18,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:01:18,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:01:18,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:01:18,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:01:18,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:01:18,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:01:18,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:01:18,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:01:18,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:01:18,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:01:18,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:01:18,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:01:18,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:01:18,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:01:18,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:01:18,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:01:18,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:01:18,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:01:18,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:01:18,716 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:01:18,717 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 02:01:18,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2d5b1c08/aee85e51952b45f4b5bbfb8eb9e977ac/FLAG6aa1bb1d3 [2020-09-25 02:01:19,339 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:01:19,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 02:01:19,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2d5b1c08/aee85e51952b45f4b5bbfb8eb9e977ac/FLAG6aa1bb1d3 [2020-09-25 02:01:19,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2d5b1c08/aee85e51952b45f4b5bbfb8eb9e977ac [2020-09-25 02:01:19,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:01:19,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:01:19,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:19,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:01:19,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:01:19,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9103a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19, skipping insertion in model container [2020-09-25 02:01:19,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:19,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:01:19,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:01:19,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:19,957 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:01:19,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:19,995 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:01:19,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19 WrapperNode [2020-09-25 02:01:19,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:19,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:01:19,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:01:19,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:01:20,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:20,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:20,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:20,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:20,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:20,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:20,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... [2020-09-25 02:01:20,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:01:20,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:01:20,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:01:20,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:01:20,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:01:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:01:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:01:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:01:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:01:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:01:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:01:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:01:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:01:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:01:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:01:20,397 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:01:20,397 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:01:20,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:20 BoogieIcfgContainer [2020-09-25 02:01:20,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:01:20,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:01:20,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:01:20,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:01:20,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:01:19" (1/3) ... [2020-09-25 02:01:20,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c086c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:20, skipping insertion in model container [2020-09-25 02:01:20,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:19" (2/3) ... [2020-09-25 02:01:20,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c086c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:20, skipping insertion in model container [2020-09-25 02:01:20,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:20" (3/3) ... [2020-09-25 02:01:20,412 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2020-09-25 02:01:20,421 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:01:20,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:01:20,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:01:20,484 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:01:20,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:01:20,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:01:20,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:01:20,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:01:20,485 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:01:20,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:01:20,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:01:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:01:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:01:20,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:20,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:20,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:20,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:01:20,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:20,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634536504] [2020-09-25 02:01:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:01:20,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 02:01:20,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:01:20,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:01:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:20,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:20,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:20,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 02:01:20,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:01:20,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634536504] [2020-09-25 02:01:20,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:20,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:20,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087182846] [2020-09-25 02:01:20,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:20,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:20,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:20,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:20,956 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:01:21,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:21,070 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:01:21,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:01:21,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:01:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:21,084 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:01:21,084 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:01:21,088 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 [2020-09-25 02:01:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:01:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:01:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:21,140 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:01:21,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:21,141 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:21,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:01:21,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:21,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:21,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:01:21,145 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:21,145 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:01:21,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:21,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533695346] [2020-09-25 02:01:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:01:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 02:01:21,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:21,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:21,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:21,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:21,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:21,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 02:01:21,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:21,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:21,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:21,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:01:21,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533695346] [2020-09-25 02:01:21,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:21,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:21,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143341564] [2020-09-25 02:01:21,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:21,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:21,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:21,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:21,439 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:01:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:21,550 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:01:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:01:21,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:01:21,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:21,553 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:01:21,553 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:21,555 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 [2020-09-25 02:01:21,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:21,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:01:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:21,576 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:01:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:21,582 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:21,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:21,582 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:01:21,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:21,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:21,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:01:21,585 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:21,586 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:01:21,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:21,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525815619] [2020-09-25 02:01:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:01:22,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-09-25 02:01:22,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:01:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:22,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:01:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:22,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:22,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:22,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:22,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:22,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:22,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:22,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:01:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 02:01:22,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:01:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:22,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:22,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:22,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:22,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:22,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:22,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:22,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:22,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:22,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:22,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:22,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:22,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:22,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:01:22,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:22,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:01:22,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525815619] [2020-09-25 02:01:22,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:22,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:01:22,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193523152] [2020-09-25 02:01:22,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:22,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:22,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:22,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:22,433 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:01:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:22,546 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:01:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:22,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:01:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:22,549 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:22,549 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:22,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:01:22,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:01:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:01:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:01:22,569 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:01:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:22,570 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:01:22,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:01:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:01:22,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:22,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:22,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:01:22,576 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:22,577 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:01:22,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:22,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771571008] [2020-09-25 02:01:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:01:23,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 02:01:23,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:23,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:23,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:23,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:23,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 02:01:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:23,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:01:23,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:23,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:23,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:23,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:23,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:01:23,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:01:23,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771571008] [2020-09-25 02:01:23,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:23,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:23,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603365934] [2020-09-25 02:01:23,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:23,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:23,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:23,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:23,539 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 02:01:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:23,622 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:01:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:23,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 02:01:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:23,625 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:01:23,625 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:01:23,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:01:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:01:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:01:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:01:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:01:23,634 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:01:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:23,635 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:01:23,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:01:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:01:23,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:23,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:23,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:01:23,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:01:23,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:23,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961730963] [2020-09-25 02:01:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:01:24,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-25 02:01:24,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:24,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:24,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:24,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:24,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:24,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:01:24,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-09-25 02:01:24,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:01:24,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:24,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:24,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:24,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:24,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:01:24,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:24,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:01:24,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961730963] [2020-09-25 02:01:24,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:24,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:01:24,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839787601] [2020-09-25 02:01:24,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:01:24,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:24,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:01:24,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:01:24,882 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 8 states. [2020-09-25 02:01:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:25,045 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2020-09-25 02:01:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:01:25,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:01:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:25,050 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:01:25,050 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:25,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:01:25,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:25,068 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:01:25,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:25,068 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:25,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:01:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:01:25,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:25,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:25,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:01:25,075 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:25,075 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:01:25,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:25,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099598372] [2020-09-25 02:01:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:25,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:01:27,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2031 [2020-09-25 02:01:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:27,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:27,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:27,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:27,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:29,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-09-25 02:01:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:29,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 02:01:29,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:29,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:29,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:29,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:01:29,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:29,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:01:29,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:29,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:01:29,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099598372] [2020-09-25 02:01:29,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:29,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:29,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468214251] [2020-09-25 02:01:29,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:29,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:29,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:29,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:29,383 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 02:01:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:29,518 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-25 02:01:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:29,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 02:01:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:29,521 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:29,521 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:29,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:29,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:29,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:29,534 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-25 02:01:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:29,535 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:29,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:01:29,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:29,536 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:29,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:01:29,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:29,539 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 02:01:29,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:29,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880133621] [2020-09-25 02:01:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:01:34,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:01:34,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 02:01:34,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:34,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:34,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:34,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:39,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:01:39,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 02:01:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:01:39,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:01:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:40,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:40,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-09-25 02:01:40,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:01:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:40,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:40,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:40,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:40,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:40,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:40,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:40,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:40,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:40,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:42,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:42,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-09-25 02:01:42,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:42,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:42,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:42,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 02:01:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:01:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:42,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:42,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:42,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:42,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 02:01:42,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:42,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:42,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:42,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:42,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:42,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:01:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 70 proven. 89 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-25 02:01:42,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880133621] [2020-09-25 02:01:42,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:42,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:01:42,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319024545] [2020-09-25 02:01:42,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:01:42,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:01:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:01:42,992 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 13 states. [2020-09-25 02:01:43,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:43,245 INFO L93 Difference]: Finished difference Result 95 states and 132 transitions. [2020-09-25 02:01:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:01:43,246 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-25 02:01:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:43,248 INFO L225 Difference]: With dead ends: 95 [2020-09-25 02:01:43,248 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 02:01:43,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:01:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 02:01:43,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-25 02:01:43,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:01:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-09-25 02:01:43,259 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 87 [2020-09-25 02:01:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:43,260 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-09-25 02:01:43,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:01:43,260 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-09-25 02:01:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:01:43,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:43,262 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:43,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:01:43,262 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:01:43,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:43,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882811900] [2020-09-25 02:01:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:48,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:01:48,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:01:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:01:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:01:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:48,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:48,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:48,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:48,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:48,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:53,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:01:53,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 02:01:53,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:01:53,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:01:53,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:53,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:58,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:01:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:01:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:01:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:58,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:58,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:58,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:58,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 02:01:58,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:58,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:01:58,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:58,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:58,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:58,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:01:58,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:58,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:58,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:58,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:58,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:58,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:58,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:01:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:00,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:00,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:03,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:02:03,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 02:02:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:02:03,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:02:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:03,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:04,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:06,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:06,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:02:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2663 [2020-09-25 02:02:06,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:02:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:06,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:06,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:06,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:06,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:06,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 02:02:06,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:06,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:06,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:06,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:07,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:07,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:07,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:07,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:02:07,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:07,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:07,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:07,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:07,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:02:07,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:07,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:07,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:07,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:07,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:02:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:07,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:07,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:07,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:02:07,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:07,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 177 proven. 173 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-09-25 02:02:07,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882811900] [2020-09-25 02:02:07,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:07,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 02:02:07,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702545130] [2020-09-25 02:02:07,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 02:02:07,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:07,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 02:02:07,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:02:07,140 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 18 states. [2020-09-25 02:02:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:07,673 INFO L93 Difference]: Finished difference Result 115 states and 149 transitions. [2020-09-25 02:02:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:02:07,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2020-09-25 02:02:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:07,677 INFO L225 Difference]: With dead ends: 115 [2020-09-25 02:02:07,677 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 02:02:07,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2020-09-25 02:02:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 02:02:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-09-25 02:02:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:02:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2020-09-25 02:02:07,688 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 123 [2020-09-25 02:02:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:07,689 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2020-09-25 02:02:07,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 02:02:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2020-09-25 02:02:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 02:02:07,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:07,692 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:07,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:02:07,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:07,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:07,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1618484333, now seen corresponding path program 5 times [2020-09-25 02:02:07,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:07,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439618205] [2020-09-25 02:02:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:12,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 02:02:12,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 02:02:12,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:02:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:02:12,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:12,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:12,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:12,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:12,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking...