/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=BIGGEST --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/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:59,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:59,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:59,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:59,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:59,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:59,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:59,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:59,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:59,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:59,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:59,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:59,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:59,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:59,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:59,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:59,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:59,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:59,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:59,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:59,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:59,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:59,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:59,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:59,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:59,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:59,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:59,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:59,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:59,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:59,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:59,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:59,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:59,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:59,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:59,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:59,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:59,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:59,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:59,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:59,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:59,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:22:59,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:59,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:59,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:59,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:59,309 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:59,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:59,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:59,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:59,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:59,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:59,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:59,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:59,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:59,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:59,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:59,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:59,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:59,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:59,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:59,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:59,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:59,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:59,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:59,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:59,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:59,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:59,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:59,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:59,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:59,316 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:22:59,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:59,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:59,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:59,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:59,841 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:59,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-24 20:22:59,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76c32258f/a07362c910314958b15ff4bd215ef1f0/FLAG6c1f738af [2020-09-24 20:23:00,483 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:23:00,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-24 20:23:00,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76c32258f/a07362c910314958b15ff4bd215ef1f0/FLAG6c1f738af [2020-09-24 20:23:00,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76c32258f/a07362c910314958b15ff4bd215ef1f0 [2020-09-24 20:23:00,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:23:00,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:23:00,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:00,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:23:00,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:23:00,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00, skipping insertion in model container [2020-09-24 20:23:00,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:23:00,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:01,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:01,173 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:01,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:01,206 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:01,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01 WrapperNode [2020-09-24 20:23:01,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:01,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:01,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:01,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:01,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:01,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:01,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:01,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:01,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-24 20:23:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-24 20:23:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:01,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:01,635 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:01,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:01 BoogieIcfgContainer [2020-09-24 20:23:01,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:01,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:01,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:01,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:01,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:23:00" (1/3) ... [2020-09-24 20:23:01,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55be5355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:01, skipping insertion in model container [2020-09-24 20:23:01,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (2/3) ... [2020-09-24 20:23:01,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55be5355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:01, skipping insertion in model container [2020-09-24 20:23:01,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:01" (3/3) ... [2020-09-24 20:23:01,652 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-09-24 20:23:01,665 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:01,676 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:01,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:01,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:01,761 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:01,761 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:01,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:01,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:01,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:01,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:01,762 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-24 20:23:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 20:23:01,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:01,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:01,818 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:01,828 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-24 20:23:01,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:01,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053654160] [2020-09-24 20:23:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:23:02,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 20:23:02,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:23:02,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:23:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:02,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:02,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:23:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:02,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053654160] [2020-09-24 20:23:02,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:02,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:02,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288405870] [2020-09-24 20:23:02,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:02,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:02,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:02,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:02,310 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-24 20:23:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:02,442 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-24 20:23:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:02,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 20:23:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:02,457 INFO L225 Difference]: With dead ends: 48 [2020-09-24 20:23:02,458 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:23:02,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:23:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 20:23:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 20:23:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 20:23:02,519 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-24 20:23:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:02,520 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 20:23:02,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:02,520 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 20:23:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 20:23:02,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:02,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:02,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:02,524 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:02,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:02,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-24 20:23:02,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:02,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889946200] [2020-09-24 20:23:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 20:23:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 20:23:02,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:02,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:23:02,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:02,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:02,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 20:23:02,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:23:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:02,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889946200] [2020-09-24 20:23:02,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:02,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:02,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044176645] [2020-09-24 20:23:02,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:02,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:02,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:02,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:02,805 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-24 20:23:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:02,888 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-24 20:23:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:02,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-24 20:23:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:02,890 INFO L225 Difference]: With dead ends: 38 [2020-09-24 20:23:02,891 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 20:23:02,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:02,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 20:23:02,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-24 20:23:02,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 20:23:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 20:23:02,900 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-24 20:23:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:02,901 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 20:23:02,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 20:23:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:23:02,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:02,903 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, 1, 1] [2020-09-24 20:23:02,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:02,904 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:02,904 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-24 20:23:02,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:02,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245180559] [2020-09-24 20:23:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:23:03,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-24 20:23:03,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:23:03,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:03,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:03,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:03,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 20:23:03,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:23:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:03,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:03,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:03,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245180559] [2020-09-24 20:23:03,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:03,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:03,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424320330] [2020-09-24 20:23:03,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:03,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:03,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:03,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:03,848 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-24 20:23:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:03,968 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-24 20:23:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:03,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 20:23:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:03,971 INFO L225 Difference]: With dead ends: 68 [2020-09-24 20:23:03,971 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:23:03,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:23:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 20:23:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 20:23:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 20:23:03,983 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-24 20:23:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:03,984 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 20:23:03,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 20:23:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:23:03,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:03,986 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, 1, 1] [2020-09-24 20:23:03,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:03,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:03,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:03,987 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-24 20:23:03,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:03,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257655902] [2020-09-24 20:23:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:23:04,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-24 20:23:04,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:04,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:04,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:23:04,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:04,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:04,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 20:23:04,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:23:04,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:04,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:04,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:04,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:04,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257655902] [2020-09-24 20:23:04,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:04,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:04,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319169485] [2020-09-24 20:23:04,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:04,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:04,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:04,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:04,802 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-24 20:23:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:04,909 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-09-24 20:23:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:23:04,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 20:23:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:04,913 INFO L225 Difference]: With dead ends: 56 [2020-09-24 20:23:04,913 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 20:23:04,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 20:23:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-09-24 20:23:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 20:23:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-09-24 20:23:04,925 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 36 [2020-09-24 20:23:04,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:04,926 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-09-24 20:23:04,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:04,926 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-09-24 20:23:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:23:04,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:04,928 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2020-09-24 20:23:04,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:04,929 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:04,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1970096676, now seen corresponding path program 2 times [2020-09-24 20:23:04,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:04,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972715244] [2020-09-24 20:23:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:23:09,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:09,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4232 [2020-09-24 20:23:09,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:23:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:23:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 20:23:09,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:09,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:09,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:09,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 20:23:10,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-09-24 20:23:10,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:23:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:10,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 20:23:10,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:23:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:10,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:10,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:10,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:10,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:23:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:10,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 20:23:10,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972715244] [2020-09-24 20:23:10,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:10,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:23:10,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447178919] [2020-09-24 20:23:10,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:10,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:10,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:10,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:10,451 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 9 states. [2020-09-24 20:23:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:10,618 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-09-24 20:23:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:10,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 20:23:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:10,620 INFO L225 Difference]: With dead ends: 82 [2020-09-24 20:23:10,621 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 20:23:10,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 20:23:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 20:23:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 20:23:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-24 20:23:10,641 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 52 [2020-09-24 20:23:10,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:10,644 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-24 20:23:10,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-24 20:23:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 20:23:10,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:10,651 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, 1, 1] [2020-09-24 20:23:10,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:10,652 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:10,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:10,653 INFO L82 PathProgramCache]: Analyzing trace with hash 4423077, now seen corresponding path program 2 times [2020-09-24 20:23:10,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:10,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778510613] [2020-09-24 20:23:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:15,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 20:23:15,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:23:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 20:23:15,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 20:23:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 20:23:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:15,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:15,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:15,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:15,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:15,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:15,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 20:23:20,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:23:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:23:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 20:23:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:20,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:20,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 20:23:20,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:20,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:21,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:21,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:21,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:21,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:24,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3032 [2020-09-24 20:23:24,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:24,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:24,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:23:24,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:24,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:24,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-24 20:23:24,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:24,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:24,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 20:23:24,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:24,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:24,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:24,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:24,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 74 proven. 66 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 20:23:24,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778510613] [2020-09-24 20:23:24,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:24,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:23:24,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447612499] [2020-09-24 20:23:24,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:24,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:24,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:24,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:24,592 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 9 states. [2020-09-24 20:23:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:24,810 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-09-24 20:23:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:23:24,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-24 20:23:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:24,815 INFO L225 Difference]: With dead ends: 85 [2020-09-24 20:23:24,819 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 20:23:24,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 20:23:24,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 20:23:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 20:23:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-09-24 20:23:24,840 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 89 [2020-09-24 20:23:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:24,842 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-09-24 20:23:24,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-09-24 20:23:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-24 20:23:24,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:24,851 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, 1, 1] [2020-09-24 20:23:24,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:24,852 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:24,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 3 times [2020-09-24 20:23:24,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:24,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952791019] [2020-09-24 20:23:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:29,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 20:23:29,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 20:23:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 20:23:29,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:23:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:23:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:29,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:29,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:29,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 20:23:34,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:23:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:23:34,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:23:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:23:34,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:36,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:36,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-09-24 20:23:36,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:36,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-24 20:23:36,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:36,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:36,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:36,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:23:36,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:36,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:36,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:36,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:36,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:36,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:41,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:23:41,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 20:23:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:23:41,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:23:41,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:44,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2605 [2020-09-24 20:23:44,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:44,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-24 20:23:44,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:44,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:23:44,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:44,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:44,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:44,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:44,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:44,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 189 proven. 161 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-09-24 20:23:44,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952791019] [2020-09-24 20:23:44,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:44,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:23:44,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424282587] [2020-09-24 20:23:44,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:23:44,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:23:44,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:44,859 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 13 states. [2020-09-24 20:23:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:45,257 INFO L93 Difference]: Finished difference Result 118 states and 153 transitions. [2020-09-24 20:23:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:23:45,257 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 125 [2020-09-24 20:23:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:45,259 INFO L225 Difference]: With dead ends: 118 [2020-09-24 20:23:45,259 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 20:23:45,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-24 20:23:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 20:23:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2020-09-24 20:23:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 20:23:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-09-24 20:23:45,280 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 125 [2020-09-24 20:23:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:45,280 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-09-24 20:23:45,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:23:45,284 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-09-24 20:23:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 20:23:45,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:45,286 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, 1, 1] [2020-09-24 20:23:45,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:45,287 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:45,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1005193447, now seen corresponding path program 4 times [2020-09-24 20:23:45,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:45,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651732283] [2020-09-24 20:23:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:45,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:50,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 20:23:50,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:50,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:23:50,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 20:23:50,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:50,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:50,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:50,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:50,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:50,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:50,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:50,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:50,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:50,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:50,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking...