/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:48:55,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:48:55,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:48:55,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:48:55,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:48:55,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:48:55,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:48:55,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:48:55,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:48:55,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:48:55,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:48:55,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:48:55,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:48:55,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:48:55,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:48:55,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:48:55,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:48:55,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:48:55,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:48:55,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:48:55,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:48:55,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:48:55,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:48:55,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:48:55,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:48:55,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:48:55,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:48:55,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:48:55,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:48:55,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:48:55,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:48:55,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:48:55,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:48:55,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:48:55,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:48:55,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:48:55,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:48:55,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:48:55,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:48:55,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:48:55,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:48:55,583 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 08:48:55,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:48:55,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:48:55,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:48:55,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:48:55,613 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:48:55,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:48:55,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:48:55,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:48:55,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:48:55,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:48:55,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:48:55,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:48:55,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:48:55,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:48:55,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:48:55,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:48:55,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:48:55,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:48:55,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:48:55,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:48:55,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:48:55,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:48:55,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:48:55,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:48:55,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:48:55,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:48:55,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:48:55,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:48:55,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:48:55,618 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:48:56,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:48:56,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:48:56,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:48:56,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:48:56,149 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:48:56,150 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-09-25 08:48:56,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb9a45a63/75e4516534a04e0d84e5892eac9d42fe/FLAG791cdc0ff [2020-09-25 08:48:56,894 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:48:56,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-09-25 08:48:56,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb9a45a63/75e4516534a04e0d84e5892eac9d42fe/FLAG791cdc0ff [2020-09-25 08:48:57,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb9a45a63/75e4516534a04e0d84e5892eac9d42fe [2020-09-25 08:48:57,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:48:57,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:48:57,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:48:57,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:48:57,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:48:57,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:57,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1840ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57, skipping insertion in model container [2020-09-25 08:48:57,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:57,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:48:57,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:48:57,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:48:57,813 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:48:57,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:48:57,951 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:48:57,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57 WrapperNode [2020-09-25 08:48:57,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:48:57,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:48:57,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:48:57,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:48:57,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:57,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:57,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:57,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:58,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:58,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:58,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (1/1) ... [2020-09-25 08:48:58,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:48:58,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:48:58,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:48:58,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:48:58,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (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 08:48:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:48:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:48:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 08:48:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 08:48:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 08:48:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 08:48:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 08:48:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 08:48:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 08:48:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 08:48:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 08:48:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 08:48:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 08:48:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 08:48:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 08:48:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 08:48:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 08:48:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 08:48:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 08:48:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 08:48:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 08:48:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 08:48:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 08:48:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:48:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 08:48:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-25 08:48:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-25 08:48:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-25 08:48:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 08:48:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 08:48:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 08:48:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 08:48:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 08:48:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 08:48:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 08:48:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 08:48:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 08:48:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 08:48:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 08:48:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 08:48:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 08:48:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:48:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:48:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 08:48:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 08:48:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 08:48:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 08:48:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 08:48:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 08:48:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 08:48:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 08:48:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 08:48:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 08:48:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 08:48:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 08:48:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 08:48:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 08:48:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 08:48:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 08:48:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-25 08:48:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-25 08:48:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 08:48:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 08:48:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 08:48:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 08:48:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 08:48:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:48:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 08:48:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 08:48:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 08:48:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 08:48:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 08:48:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-25 08:48:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 08:48:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 08:48:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:48:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 08:48:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 08:48:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:48:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:48:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 08:48:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:48:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:48:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:48:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:48:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 08:48:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:48:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 08:48:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 08:48:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:48:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 08:48:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 08:48:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 08:48:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:48:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 08:48:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:48:59,394 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:48:59,394 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 08:48:59,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:48:59 BoogieIcfgContainer [2020-09-25 08:48:59,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:48:59,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:48:59,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:48:59,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:48:59,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:48:57" (1/3) ... [2020-09-25 08:48:59,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288ab1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:48:59, skipping insertion in model container [2020-09-25 08:48:59,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:48:57" (2/3) ... [2020-09-25 08:48:59,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288ab1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:48:59, skipping insertion in model container [2020-09-25 08:48:59,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:48:59" (3/3) ... [2020-09-25 08:48:59,412 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-09-25 08:48:59,424 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:48:59,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:48:59,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:48:59,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:48:59,500 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:48:59,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:48:59,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:48:59,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:48:59,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:48:59,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:48:59,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:48:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states. [2020-09-25 08:48:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 08:48:59,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:48:59,556 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 08:48:59,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:48:59,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:48:59,566 INFO L82 PathProgramCache]: Analyzing trace with hash 938593778, now seen corresponding path program 1 times [2020-09-25 08:48:59,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:48:59,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235663443] [2020-09-25 08:48:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:48:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:00,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:01,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 08:49:05,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:49:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 08:49:05,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:05,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:05,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-25 08:49:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 08:49:05,629 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:49:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:49:05,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 08:49:05,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:05,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:05,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:49:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:05,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:49:05,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:05,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:05,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 08:49:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:05,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:49:05,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:05,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 08:49:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:05,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:49:05,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:05,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:05,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 08:49:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:05,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:05,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:05,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:05,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:05,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:49:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:49:05,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:05,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:05,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:05,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:05,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:05,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:05,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 08:49:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:49:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:05,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:49:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:05,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:05,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:05,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:05,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:05,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:49:06,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:06,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:06,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 08:49:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:06,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:06,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:06,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 08:49:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:06,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:06,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:06,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:06,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:06,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:06,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:06,065 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 08:49:06,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235663443] [2020-09-25 08:49:06,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:49:06,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:49:06,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110677008] [2020-09-25 08:49:06,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:49:06,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:49:06,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:49:06,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:49:06,103 INFO L87 Difference]: Start difference. First operand 325 states. Second operand 4 states. [2020-09-25 08:49:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:49:07,519 INFO L93 Difference]: Finished difference Result 510 states and 600 transitions. [2020-09-25 08:49:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:49:07,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 08:49:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:49:07,543 INFO L225 Difference]: With dead ends: 510 [2020-09-25 08:49:07,543 INFO L226 Difference]: Without dead ends: 321 [2020-09-25 08:49:07,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:49:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-25 08:49:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 274. [2020-09-25 08:49:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 08:49:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 299 transitions. [2020-09-25 08:49:07,661 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 299 transitions. Word has length 160 [2020-09-25 08:49:07,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:49:07,662 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 299 transitions. [2020-09-25 08:49:07,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:49:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 299 transitions. [2020-09-25 08:49:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 08:49:07,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:49:07,669 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 08:49:07,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:49:07,670 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:49:07,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:49:07,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1609710943, now seen corresponding path program 1 times [2020-09-25 08:49:07,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:49:07,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799885653] [2020-09-25 08:49:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:49:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:07,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:09,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:12,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:12,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 08:49:12,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:49:12,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 08:49:12,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:12,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 08:49:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:49:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:13,069 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:49:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:49:13,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 08:49:13,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:49:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:13,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:13,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 08:49:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:13,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:13,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 08:49:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:13,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:13,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 08:49:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:13,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:49:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:49:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:49:13,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:13,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 08:49:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:49:13,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:49:13,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:49:13,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:13,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:13,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:49:13,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:13,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 08:49:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:13,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:13,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 08:49:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:13,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:13,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:13,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:13,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:13,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:13,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:13,432 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 08:49:13,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799885653] [2020-09-25 08:49:13,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:49:13,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:49:13,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024078530] [2020-09-25 08:49:13,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:49:13,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:49:13,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:49:13,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:49:13,437 INFO L87 Difference]: Start difference. First operand 274 states and 299 transitions. Second operand 5 states. [2020-09-25 08:49:14,107 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:49:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:49:15,211 INFO L93 Difference]: Finished difference Result 433 states and 488 transitions. [2020-09-25 08:49:15,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:49:15,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 08:49:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:49:15,216 INFO L225 Difference]: With dead ends: 433 [2020-09-25 08:49:15,216 INFO L226 Difference]: Without dead ends: 310 [2020-09-25 08:49:15,219 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 08:49:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-25 08:49:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 264. [2020-09-25 08:49:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-25 08:49:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 286 transitions. [2020-09-25 08:49:15,267 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 286 transitions. Word has length 161 [2020-09-25 08:49:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:49:15,268 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 286 transitions. [2020-09-25 08:49:15,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:49:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 286 transitions. [2020-09-25 08:49:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 08:49:15,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:49:15,272 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] [2020-09-25 08:49:15,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:49:15,272 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:49:15,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:49:15,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1288155326, now seen corresponding path program 1 times [2020-09-25 08:49:15,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:49:15,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880459526] [2020-09-25 08:49:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:49:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:15,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:20,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:20,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 08:49:20,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:49:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 08:49:20,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:20,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:49:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 08:49:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:49:20,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:20,702 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:49:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:20,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:20,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:49:20,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 08:49:20,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:20,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:49:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:21,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:49:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:21,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:21,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:49:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 08:49:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:21,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:21,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:49:21,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:21,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 08:49:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:21,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:49:21,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:49:21,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 08:49:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:21,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:21,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:49:21,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:49:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:49:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:21,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:49:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 08:49:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:49:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:49:21,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:49:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:21,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:21,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 08:49:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:21,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:21,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-25 08:49:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:21,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:21,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:21,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:21,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:21,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:21,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:21,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:21,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:21,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:21,146 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 08:49:21,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880459526] [2020-09-25 08:49:21,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:49:21,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:49:21,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213271026] [2020-09-25 08:49:21,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:49:21,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:49:21,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:49:21,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:49:21,150 INFO L87 Difference]: Start difference. First operand 264 states and 286 transitions. Second operand 5 states. [2020-09-25 08:49:21,853 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 08:49:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:49:23,762 INFO L93 Difference]: Finished difference Result 616 states and 704 transitions. [2020-09-25 08:49:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:49:23,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 08:49:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:49:23,769 INFO L225 Difference]: With dead ends: 616 [2020-09-25 08:49:23,770 INFO L226 Difference]: Without dead ends: 467 [2020-09-25 08:49:23,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:49:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-09-25 08:49:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 407. [2020-09-25 08:49:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-09-25 08:49:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 452 transitions. [2020-09-25 08:49:23,837 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 452 transitions. Word has length 170 [2020-09-25 08:49:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:49:23,838 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 452 transitions. [2020-09-25 08:49:23,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:49:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 452 transitions. [2020-09-25 08:49:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 08:49:23,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:49:23,843 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 08:49:23,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:49:23,843 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:49:23,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:49:23,843 INFO L82 PathProgramCache]: Analyzing trace with hash -271509022, now seen corresponding path program 1 times [2020-09-25 08:49:23,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:49:23,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643522731] [2020-09-25 08:49:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:49:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 08:49:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:49:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 08:49:28,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:28,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:49:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 08:49:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 08:49:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,272 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:49:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:49:29,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 08:49:29,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:49:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:29,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:29,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 08:49:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:29,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:29,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 08:49:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:29,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:49:29,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 08:49:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:29,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:49:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:49:29,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:29,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 08:49:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:49:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:49:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:49:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 08:49:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:49:29,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:49:29,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:49:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:29,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:29,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-25 08:49:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:29,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:49:29,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:49:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:49:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-25 08:49:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:29,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:29,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:29,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:49:29,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:29,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:49:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:49:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:29,692 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 08:49:29,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643522731] [2020-09-25 08:49:29,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:49:29,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 08:49:29,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230904934] [2020-09-25 08:49:29,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:49:29,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:49:29,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:49:29,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:49:29,699 INFO L87 Difference]: Start difference. First operand 407 states and 452 transitions. Second operand 10 states. [2020-09-25 08:49:30,212 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 08:49:31,188 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 08:49:31,538 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 08:49:32,734 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:49:33,086 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 08:49:33,445 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 08:49:34,084 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 08:49:34,405 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 08:49:34,723 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 08:49:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:49:35,363 INFO L93 Difference]: Finished difference Result 962 states and 1149 transitions. [2020-09-25 08:49:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 08:49:35,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 08:49:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:49:35,370 INFO L225 Difference]: With dead ends: 962 [2020-09-25 08:49:35,370 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 08:49:35,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-25 08:49:35,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 08:49:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 587. [2020-09-25 08:49:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-09-25 08:49:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 662 transitions. [2020-09-25 08:49:35,454 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 662 transitions. Word has length 179 [2020-09-25 08:49:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:49:35,454 INFO L479 AbstractCegarLoop]: Abstraction has 587 states and 662 transitions. [2020-09-25 08:49:35,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:49:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 662 transitions. [2020-09-25 08:49:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 08:49:35,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:49:35,458 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] [2020-09-25 08:49:35,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:49:35,459 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:49:35,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:49:35,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1165066921, now seen corresponding path program 1 times [2020-09-25 08:49:35,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:49:35,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454851413] [2020-09-25 08:49:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:49:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 08:49:36,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-09-25 08:49:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:49:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-25 08:49:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:49:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:36,721 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:49:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:49:36,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 08:49:36,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:36,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:49:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:36,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:49:36,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 08:49:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:49:36,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:36,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 08:49:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:36,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:36,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 08:49:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:36,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:49:36,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:49:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:49:36,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:49:36,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:36,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 08:49:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:49:36,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:36,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:36,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:36,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:49:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:36,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:36,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 08:49:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:37,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:49:37,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 08:49:37,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:37,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:49:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 08:49:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:49:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:49:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:37,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:37,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 08:49:37,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 08:49:37,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:37,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:37,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:49:37,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:49:37,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:49:37,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:37,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:49:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:37,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:37,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:49:37,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 08:49:37,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:37,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:49:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:49:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:37,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:49:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:37,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:37,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:37,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:49:37,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:49:37,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:37,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:37,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 08:49:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:37,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:37,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:49:37,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:37,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:37,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:37,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:49:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:37,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-09-25 08:49:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:37,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:37,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:37,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:37,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:37,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-25 08:49:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:37,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:37,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:37,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:37,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:37,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:37,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:37,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:37,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:37,279 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 08:49:37,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454851413] [2020-09-25 08:49:37,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:49:37,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 08:49:37,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000432044] [2020-09-25 08:49:37,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:49:37,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:49:37,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:49:37,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:49:37,282 INFO L87 Difference]: Start difference. First operand 587 states and 662 transitions. Second operand 10 states. [2020-09-25 08:49:38,888 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:49:39,208 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 08:49:39,536 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 08:49:39,879 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 08:49:40,230 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-25 08:49:40,552 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 08:49:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:49:41,397 INFO L93 Difference]: Finished difference Result 1171 states and 1379 transitions. [2020-09-25 08:49:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:49:41,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 208 [2020-09-25 08:49:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:49:41,409 INFO L225 Difference]: With dead ends: 1171 [2020-09-25 08:49:41,410 INFO L226 Difference]: Without dead ends: 699 [2020-09-25 08:49:41,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:49:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-09-25 08:49:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 606. [2020-09-25 08:49:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-09-25 08:49:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 682 transitions. [2020-09-25 08:49:41,498 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 682 transitions. Word has length 208 [2020-09-25 08:49:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:49:41,498 INFO L479 AbstractCegarLoop]: Abstraction has 606 states and 682 transitions. [2020-09-25 08:49:41,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:49:41,499 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 682 transitions. [2020-09-25 08:49:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 08:49:41,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:49:41,503 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] [2020-09-25 08:49:41,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:49:41,503 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:49:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:49:41,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1290271305, now seen corresponding path program 1 times [2020-09-25 08:49:41,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:49:41,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181239212] [2020-09-25 08:49:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:49:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 08:49:42,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-09-25 08:49:42,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:49:42,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 08:49:42,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:49:42,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:42,668 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:49:42,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:49:42,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 08:49:42,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:42,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 08:49:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:42,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:42,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 08:49:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:42,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:49:42,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:42,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 08:49:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:42,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:49:42,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 08:49:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:49:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:49:42,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:49:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:49:42,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:42,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 08:49:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:49:42,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:49:42,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:49:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:42,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 08:49:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:42,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:42,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:49:42,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 08:49:42,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:42,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:49:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:49:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:49:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:42,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:49:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:42,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:43,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:43,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 08:49:43,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 08:49:43,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:43,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:49:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:49:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:49:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:49:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:49:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:43,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:43,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:49:43,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 08:49:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:43,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:49:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:49:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:49:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:49:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:43,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:43,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:49:43,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:43,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:49:43,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:43,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:43,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:49:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:49:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:49:43,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 08:49:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:43,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:43,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:49:43,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:43,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:43,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:49:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:43,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:43,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-09-25 08:49:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:43,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:43,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:43,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:43,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:43,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:49:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-25 08:49:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:49:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:49:43,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:49:43,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:49:43,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:49:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:49:43,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:49:43,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:49:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:49:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:49:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:49:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:49:43,243 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 08:49:43,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181239212] [2020-09-25 08:49:43,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:49:43,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 08:49:43,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670350899] [2020-09-25 08:49:43,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:49:43,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:49:43,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:49:43,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:49:43,249 INFO L87 Difference]: Start difference. First operand 606 states and 682 transitions. Second operand 9 states.