/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:57:59,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:57:59,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:57:59,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:57:59,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:57:59,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:57:59,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:57:59,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:57:59,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:57:59,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:57:59,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:57:59,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:57:59,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:57:59,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:57:59,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:57:59,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:57:59,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:57:59,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:57:59,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:57:59,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:57:59,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:57:59,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:57:59,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:57:59,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:57:59,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:57:59,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:57:59,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:57:59,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:57:59,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:57:59,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:57:59,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:57:59,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:57:59,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:57:59,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:57:59,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:57:59,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:57:59,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:57:59,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:57:59,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:57:59,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:57:59,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:57:59,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:57:59,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:57:59,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:57:59,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:57:59,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:57:59,298 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:57:59,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:57:59,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:57:59,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:57:59,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:57:59,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:57:59,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:57:59,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:57:59,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:57:59,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:57:59,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:57:59,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:57:59,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:57:59,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:57:59,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:57:59,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:57:59,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:57:59,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:57:59,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:57:59,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:57:59,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:57:59,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:57:59,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:57:59,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:57:59,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:57:59,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:57:59,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:57:59,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:57:59,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:57:59,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:57:59,799 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:57:59,800 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-09-25 01:57:59,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b4b75c68/bb0f9ff254844cfba0f1943e3adb879c/FLAGc55001392 [2020-09-25 01:58:00,514 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:58:00,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-09-25 01:58:00,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b4b75c68/bb0f9ff254844cfba0f1943e3adb879c/FLAGc55001392 [2020-09-25 01:58:00,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b4b75c68/bb0f9ff254844cfba0f1943e3adb879c [2020-09-25 01:58:00,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:58:00,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:58:00,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:58:00,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:58:00,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:58:00,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:58:00" (1/1) ... [2020-09-25 01:58:00,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f08780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:00, skipping insertion in model container [2020-09-25 01:58:00,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:58:00" (1/1) ... [2020-09-25 01:58:00,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:58:00,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:58:01,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:58:01,513 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:58:01,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:58:01,656 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:58:01,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01 WrapperNode [2020-09-25 01:58:01,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:58:01,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:58:01,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:58:01,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:58:01,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (1/1) ... [2020-09-25 01:58:01,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (1/1) ... [2020-09-25 01:58:01,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (1/1) ... [2020-09-25 01:58:01,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (1/1) ... [2020-09-25 01:58:01,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (1/1) ... [2020-09-25 01:58:01,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (1/1) ... [2020-09-25 01:58:01,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (1/1) ... [2020-09-25 01:58:01,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:58:01,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:58:01,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:58:01,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:58:01,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (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 [2020-09-25 01:58:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:58:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:58:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:58:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:58:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:58:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:58:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:58:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:58:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:58:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:58:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:58:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:58:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:58:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:58:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 01:58:01,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:58:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:58:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:58:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:58:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:58:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:58:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:58:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:58:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:58:01,842 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:58:01,842 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:58:01,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:58:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:58:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:58:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:58:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:58:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-25 01:58:01,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-25 01:58:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-25 01:58:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:58:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:58:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:58:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:58:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:58:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:58:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:58:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:58:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:58:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:58:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:58:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:58:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:58:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:58:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:58:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:58:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:58:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:58:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:58:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:58:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:58:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:58:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:58:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:58:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:58:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:58:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:58:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:58:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:58:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:58:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-25 01:58:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-25 01:58:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:58:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:58:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:58:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:58:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:58:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 01:58:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:58:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:58:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:58:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:58:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:58:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:58:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:58:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:58:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-25 01:58:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:58:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:58:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:58:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:58:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:58:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:58:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:58:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:58:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:58:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:58:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:58:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:58:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:58:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:58:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:58:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:58:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:58:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:58:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:58:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:58:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:58:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:58:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:58:02,993 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:58:02,994 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:58:03,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:58:03 BoogieIcfgContainer [2020-09-25 01:58:03,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:58:03,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:58:03,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:58:03,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:58:03,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:58:00" (1/3) ... [2020-09-25 01:58:03,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600e3d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:58:03, skipping insertion in model container [2020-09-25 01:58:03,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:58:01" (2/3) ... [2020-09-25 01:58:03,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600e3d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:58:03, skipping insertion in model container [2020-09-25 01:58:03,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:58:03" (3/3) ... [2020-09-25 01:58:03,012 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2020-09-25 01:58:03,024 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:58:03,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:58:03,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:58:03,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:58:03,087 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:58:03,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:58:03,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:58:03,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:58:03,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:58:03,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:58:03,088 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:58:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states. [2020-09-25 01:58:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 01:58:03,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:58:03,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:58:03,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:58:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:58:03,149 INFO L82 PathProgramCache]: Analyzing trace with hash -36898584, now seen corresponding path program 1 times [2020-09-25 01:58:03,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:58:03,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367818911] [2020-09-25 01:58:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:58:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 01:58:08,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:58:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 01:58:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-25 01:58:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:58:08,892 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:58:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:58:09,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 01:58:09,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:09,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:58:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:09,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:09,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:58:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:09,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:09,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:09,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:58:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:09,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:58:09,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:58:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:09,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:09,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:09,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:58:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:58:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:09,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:58:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:58:09,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:58:09,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:58:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:09,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:09,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:09,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 01:58:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:09,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:09,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:58:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 01:58:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:09,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:09,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:09,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:09,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:58:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:58:09,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367818911] [2020-09-25 01:58:09,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:58:09,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:58:09,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312747437] [2020-09-25 01:58:09,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:58:09,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:58:09,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:58:09,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:58:09,352 INFO L87 Difference]: Start difference. First operand 360 states. Second operand 4 states. [2020-09-25 01:58:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:58:11,045 INFO L93 Difference]: Finished difference Result 584 states and 687 transitions. [2020-09-25 01:58:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:58:11,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 01:58:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:58:11,069 INFO L225 Difference]: With dead ends: 584 [2020-09-25 01:58:11,069 INFO L226 Difference]: Without dead ends: 360 [2020-09-25 01:58:11,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:58:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-09-25 01:58:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 309. [2020-09-25 01:58:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-09-25 01:58:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 339 transitions. [2020-09-25 01:58:11,198 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 339 transitions. Word has length 160 [2020-09-25 01:58:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:58:11,199 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 339 transitions. [2020-09-25 01:58:11,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:58:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 339 transitions. [2020-09-25 01:58:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:58:11,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:58:11,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:58:11,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:58:11,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:58:11,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:58:11,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1699569308, now seen corresponding path program 1 times [2020-09-25 01:58:11,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:58:11,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932725165] [2020-09-25 01:58:11,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:58:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:13,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 01:58:16,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:58:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 01:58:16,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:58:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 01:58:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:58:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:16,578 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:58:16,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:58:16,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 01:58:16,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:16,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:58:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:16,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:16,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:16,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:58:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:16,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:16,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:16,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:58:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:16,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:58:16,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:16,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:58:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:16,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:16,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:58:16,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:58:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:58:16,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:16,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:16,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:58:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:58:16,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:58:16,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:58:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:16,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:16,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:16,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 01:58:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:16,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:16,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:58:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 01:58:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:16,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:16,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:16,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:16,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:58:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:58:16,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932725165] [2020-09-25 01:58:16,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:58:16,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:58:16,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046413251] [2020-09-25 01:58:16,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:58:16,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:58:16,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:58:16,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:58:16,861 INFO L87 Difference]: Start difference. First operand 309 states and 339 transitions. Second operand 5 states. [2020-09-25 01:58:17,664 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:58:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:58:18,892 INFO L93 Difference]: Finished difference Result 503 states and 571 transitions. [2020-09-25 01:58:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:58:18,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 01:58:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:58:18,898 INFO L225 Difference]: With dead ends: 503 [2020-09-25 01:58:18,898 INFO L226 Difference]: Without dead ends: 349 [2020-09-25 01:58:18,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:58:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-25 01:58:18,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 299. [2020-09-25 01:58:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-09-25 01:58:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 326 transitions. [2020-09-25 01:58:18,953 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 326 transitions. Word has length 161 [2020-09-25 01:58:18,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:58:18,954 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 326 transitions. [2020-09-25 01:58:18,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:58:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 326 transitions. [2020-09-25 01:58:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 01:58:18,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:58:18,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:58:18,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:58:18,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:58:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:58:18,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1512642209, now seen corresponding path program 1 times [2020-09-25 01:58:18,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:58:18,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515549878] [2020-09-25 01:58:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:58:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:21,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 01:58:24,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:58:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 01:58:24,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:58:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-25 01:58:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 01:58:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:24,462 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:58:24,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:58:24,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 01:58:24,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 01:58:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:58:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:24,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:24,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:58:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:24,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:24,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:58:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:24,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:58:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:24,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:58:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:58:24,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:24,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 01:58:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:58:24,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:24,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:58:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:58:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:58:24,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:58:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:58:24,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:58:24,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:58:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 01:58:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:24,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:58:24,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 01:58:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:24,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:24,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:58:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-09-25 01:58:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:24,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:24,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:24,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:24,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:24,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:58:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:24,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:58:24,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515549878] [2020-09-25 01:58:24,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:58:24,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:58:24,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59863405] [2020-09-25 01:58:24,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:58:24,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:58:24,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:58:24,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:58:24,776 INFO L87 Difference]: Start difference. First operand 299 states and 326 transitions. Second operand 6 states. [2020-09-25 01:58:25,321 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:58:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:58:27,901 INFO L93 Difference]: Finished difference Result 749 states and 870 transitions. [2020-09-25 01:58:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:58:27,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-09-25 01:58:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:58:27,906 INFO L225 Difference]: With dead ends: 749 [2020-09-25 01:58:27,907 INFO L226 Difference]: Without dead ends: 565 [2020-09-25 01:58:27,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:58:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-09-25 01:58:27,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 473. [2020-09-25 01:58:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-09-25 01:58:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 528 transitions. [2020-09-25 01:58:28,003 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 528 transitions. Word has length 174 [2020-09-25 01:58:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:58:28,003 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 528 transitions. [2020-09-25 01:58:28,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:58:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 528 transitions. [2020-09-25 01:58:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 01:58:28,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:58:28,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:58:28,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:58:28,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:58:28,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:58:28,009 INFO L82 PathProgramCache]: Analyzing trace with hash -159814954, now seen corresponding path program 1 times [2020-09-25 01:58:28,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:58:28,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193943453] [2020-09-25 01:58:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:58:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:28,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:28,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:31,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 01:58:33,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:58:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 01:58:33,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:58:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-25 01:58:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:58:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,462 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:58:33,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:58:33,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 01:58:33,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:58:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:33,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:58:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:33,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:33,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:58:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:33,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:33,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:58:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:33,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:33,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:58:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:58:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:33,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 01:58:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:58:33,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:33,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:58:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:58:33,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:33,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:33,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:33,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:33,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-25 01:58:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:58:33,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:58:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:58:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-25 01:58:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:33,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:33,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:58:33,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:58:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:58:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 01:58:33,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193943453] [2020-09-25 01:58:33,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:58:33,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:58:33,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847338796] [2020-09-25 01:58:33,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:58:33,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:58:33,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:58:33,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:58:33,852 INFO L87 Difference]: Start difference. First operand 473 states and 528 transitions. Second operand 10 states. [2020-09-25 01:58:34,585 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:58:35,900 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:58:36,174 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:58:37,340 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:58:37,690 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:58:38,081 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:58:38,717 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:58:39,067 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-25 01:58:39,411 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 01:58:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:58:40,362 INFO L93 Difference]: Finished difference Result 1118 states and 1339 transitions. [2020-09-25 01:58:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 01:58:40,363 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 01:58:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:58:40,369 INFO L225 Difference]: With dead ends: 1118 [2020-09-25 01:58:40,369 INFO L226 Difference]: Without dead ends: 760 [2020-09-25 01:58:40,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-25 01:58:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-09-25 01:58:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 673. [2020-09-25 01:58:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-09-25 01:58:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 760 transitions. [2020-09-25 01:58:40,459 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 760 transitions. Word has length 179 [2020-09-25 01:58:40,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:58:40,460 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 760 transitions. [2020-09-25 01:58:40,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:58:40,460 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 760 transitions. [2020-09-25 01:58:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 01:58:40,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:58:40,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:58:40,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:58:40,465 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:58:40,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:58:40,465 INFO L82 PathProgramCache]: Analyzing trace with hash 64355154, now seen corresponding path program 1 times [2020-09-25 01:58:40,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:58:40,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951714937] [2020-09-25 01:58:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:58:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 01:58:41,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-09-25 01:58:41,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:58:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-09-25 01:58:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:58:41,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,632 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:58:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:58:41,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 01:58:41,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:58:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:41,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:41,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:58:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:41,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:58:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:41,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:58:41,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:58:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:58:41,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:58:41,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:58:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:58:41,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:41,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 01:58:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:58:41,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:41,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:58:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:58:41,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:41,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:58:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:41,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:58:41,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:41,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 01:58:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:41,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:41,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 01:58:41,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 01:58:41,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:58:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 01:58:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:58:41,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:58:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:42,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:42,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:58:42,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 01:58:42,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:58:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:58:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:58:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:58:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:42,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:42,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 01:58:42,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 01:58:42,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:58:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:58:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:58:42,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:58:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:42,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:42,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:58:42,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 01:58:42,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:58:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:58:42,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:42,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:58:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:42,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:42,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:58:42,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:58:42,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:58:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:42,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:42,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:58:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:42,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:42,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:58:42,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:42,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:58:42,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:42,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:58:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:42,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:58:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-25 01:58:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:42,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:42,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:42,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:58:42,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:58:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-25 01:58:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:42,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:42,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:58:42,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:42,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:58:42,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:58:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:58:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:58:42,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:58:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:58:42,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951714937] [2020-09-25 01:58:42,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:58:42,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 01:58:42,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443380728] [2020-09-25 01:58:42,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 01:58:42,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:58:42,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 01:58:42,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:58:42,361 INFO L87 Difference]: Start difference. First operand 673 states and 760 transitions. Second operand 11 states. [2020-09-25 01:58:44,195 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:58:44,531 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:58:44,876 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-25 01:58:45,221 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:58:45,552 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:58:45,853 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:58:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:58:47,472 INFO L93 Difference]: Finished difference Result 1416 states and 1697 transitions. [2020-09-25 01:58:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 01:58:47,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 217 [2020-09-25 01:58:47,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:58:47,478 INFO L225 Difference]: With dead ends: 1416 [2020-09-25 01:58:47,478 INFO L226 Difference]: Without dead ends: 858 [2020-09-25 01:58:47,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-25 01:58:47,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-09-25 01:58:47,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 692. [2020-09-25 01:58:47,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-09-25 01:58:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 780 transitions. [2020-09-25 01:58:47,583 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 780 transitions. Word has length 217 [2020-09-25 01:58:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:58:47,584 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 780 transitions. [2020-09-25 01:58:47,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 01:58:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 780 transitions. [2020-09-25 01:58:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 01:58:47,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:58:47,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:58:47,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:58:47,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:58:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:58:47,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2026418, now seen corresponding path program 1 times [2020-09-25 01:58:47,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:58:47,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118975570] [2020-09-25 01:58:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:58:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:58:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:58:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:58:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 01:58:48,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:58:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 01:58:48,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:58:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:58:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-09-25 01:58:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:58:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0