/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=SMALLEST --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_spec1_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:54:13,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:54:13,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:54:13,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:54:13,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:54:13,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:54:13,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:54:13,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:54:13,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:54:13,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:54:13,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:54:13,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:54:13,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:54:13,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:54:13,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:54:13,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:54:13,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:54:13,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:54:13,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:54:13,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:54:13,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:54:13,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:54:13,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:54:13,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:54:13,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:54:13,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:54:13,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:54:13,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:54:13,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:54:13,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:54:13,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:54:13,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:54:13,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:54:13,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:54:13,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:54:13,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:54:13,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:54:13,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:54:13,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:54:13,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:54:13,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:54:13,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:54:13,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:54:13,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:54:13,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:54:13,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:54:13,219 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:54:13,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:54:13,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:54:13,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:54:13,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:54:13,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:54:13,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:54:13,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:54:13,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:54:13,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:54:13,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:54:13,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:54:13,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:54:13,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:54:13,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:54:13,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:54:13,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:54:13,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:54:13,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:54:13,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:54:13,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:54:13,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:54:13,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:54:13,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:54:13,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:54:13,225 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 17:54:13,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:54:13,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:54:13,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:54:13,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:54:13,749 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:54:13,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product24.cil.c [2020-09-24 17:54:13,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb8cdeb3c/bd15e33d41bb40b4a6f1ad443ef017fb/FLAG32118b096 [2020-09-24 17:54:14,463 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:54:14,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product24.cil.c [2020-09-24 17:54:14,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb8cdeb3c/bd15e33d41bb40b4a6f1ad443ef017fb/FLAG32118b096 [2020-09-24 17:54:14,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb8cdeb3c/bd15e33d41bb40b4a6f1ad443ef017fb [2020-09-24 17:54:14,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:54:14,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:54:14,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:54:14,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:54:14,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:54:14,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:54:14" (1/1) ... [2020-09-24 17:54:14,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:14, skipping insertion in model container [2020-09-24 17:54:14,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:54:14" (1/1) ... [2020-09-24 17:54:14,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:54:14,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:54:15,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:54:15,346 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:54:15,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:54:15,500 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:54:15,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15 WrapperNode [2020-09-24 17:54:15,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:54:15,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:54:15,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:54:15,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:54:15,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (1/1) ... [2020-09-24 17:54:15,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (1/1) ... [2020-09-24 17:54:15,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (1/1) ... [2020-09-24 17:54:15,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (1/1) ... [2020-09-24 17:54:15,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (1/1) ... [2020-09-24 17:54:15,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (1/1) ... [2020-09-24 17:54:15,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (1/1) ... [2020-09-24 17:54:15,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:54:15,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:54:15,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:54:15,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:54:15,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:54:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:54:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:54:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 17:54:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 17:54:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 17:54:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 17:54:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 17:54:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 17:54:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 17:54:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 17:54:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 17:54:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 17:54:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 17:54:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 17:54:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 17:54:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 17:54:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 17:54:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 17:54:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 17:54:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 17:54:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 17:54:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 17:54:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 17:54:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:54:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 17:54:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 17:54:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 17:54:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 17:54:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 17:54:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 17:54:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 17:54:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 17:54:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 17:54:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 17:54:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 17:54:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 17:54:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 17:54:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 17:54:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 17:54:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 17:54:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:54:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:54:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 17:54:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 17:54:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:54:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:54:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 17:54:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:54:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:54:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:54:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:54:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 17:54:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:54:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 17:54:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 17:54:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:54:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 17:54:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 17:54:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:54:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 17:54:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 17:54:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 17:54:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 17:54:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 17:54:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 17:54:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 17:54:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 17:54:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 17:54:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 17:54:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 17:54:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 17:54:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 17:54:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 17:54:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 17:54:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 17:54:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 17:54:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 17:54:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 17:54:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 17:54:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 17:54:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 17:54:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 17:54:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:54:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 17:54:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 17:54:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 17:54:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 17:54:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 17:54:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 17:54:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 17:54:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 17:54:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:54:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 17:54:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:54:17,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:54:17,136 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 17:54:17,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:54:17 BoogieIcfgContainer [2020-09-24 17:54:17,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:54:17,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:54:17,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:54:17,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:54:17,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:54:14" (1/3) ... [2020-09-24 17:54:17,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25641ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:54:17, skipping insertion in model container [2020-09-24 17:54:17,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:54:15" (2/3) ... [2020-09-24 17:54:17,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25641ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:54:17, skipping insertion in model container [2020-09-24 17:54:17,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:54:17" (3/3) ... [2020-09-24 17:54:17,154 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product24.cil.c [2020-09-24 17:54:17,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:54:17,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:54:17,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:54:17,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:54:17,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:54:17,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:54:17,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:54:17,231 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:54:17,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:54:17,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:54:17,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:54:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states. [2020-09-24 17:54:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 17:54:17,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:54:17,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:54:17,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:54:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:54:17,287 INFO L82 PathProgramCache]: Analyzing trace with hash 779831521, now seen corresponding path program 1 times [2020-09-24 17:54:17,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:54:17,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778902306] [2020-09-24 17:54:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:54:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:22,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:22,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 17:54:22,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:54:22,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 17:54:22,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:22,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 17:54:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:22,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 17:54:23,266 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:54:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:54:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:23,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:23,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:54:23,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:23,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 17:54:23,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:54:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:23,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:23,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:23,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:23,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:23,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:23,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:54:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:23,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:23,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:23,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:54:23,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:54:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:23,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:23,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:23,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:54:23,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:54:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:23,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:23,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:23,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:23,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:23,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 17:54:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:23,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:54:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:54:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:23,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 17:54:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:23,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:23,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:23,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:54:23,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:54:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:23,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:54:23,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778902306] [2020-09-24 17:54:23,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:54:23,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:54:23,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271810992] [2020-09-24 17:54:23,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:54:23,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:54:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:54:23,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:54:23,616 INFO L87 Difference]: Start difference. First operand 305 states. Second operand 3 states. [2020-09-24 17:54:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:54:25,329 INFO L93 Difference]: Finished difference Result 478 states and 575 transitions. [2020-09-24 17:54:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:54:25,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 17:54:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:54:25,355 INFO L225 Difference]: With dead ends: 478 [2020-09-24 17:54:25,356 INFO L226 Difference]: Without dead ends: 298 [2020-09-24 17:54:25,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:54:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-24 17:54:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 254. [2020-09-24 17:54:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-24 17:54:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 278 transitions. [2020-09-24 17:54:25,527 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 278 transitions. Word has length 142 [2020-09-24 17:54:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:54:25,529 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 278 transitions. [2020-09-24 17:54:25,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:54:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 278 transitions. [2020-09-24 17:54:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 17:54:25,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:54:25,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:54:25,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:54:25,567 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:54:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:54:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash 912428730, now seen corresponding path program 1 times [2020-09-24 17:54:25,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:54:25,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630634013] [2020-09-24 17:54:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:54:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:25,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:27,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:30,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:30,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 17:54:30,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:54:30,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 17:54:30,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:54:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 17:54:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:54:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:30,963 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:54:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:54:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:31,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:31,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:54:31,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 17:54:31,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:31,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:31,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:54:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:31,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:31,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:31,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:31,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:31,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:31,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:54:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:31,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:31,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:31,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:31,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:31,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:54:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:31,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:31,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:31,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:31,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:31,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:54:31,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:31,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:31,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:31,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:54:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:31,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:31,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:31,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:31,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:54:31,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:31,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 17:54:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:31,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:31,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:31,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:31,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:54:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 17:54:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:31,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:31,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:31,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:31,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:54:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:54:31,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630634013] [2020-09-24 17:54:31,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:54:31,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:54:31,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633560869] [2020-09-24 17:54:31,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:54:31,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:54:31,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:54:31,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:54:31,169 INFO L87 Difference]: Start difference. First operand 254 states and 278 transitions. Second operand 4 states. [2020-09-24 17:54:31,851 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:54:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:54:32,920 INFO L93 Difference]: Finished difference Result 385 states and 438 transitions. [2020-09-24 17:54:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:54:32,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 17:54:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:54:32,927 INFO L225 Difference]: With dead ends: 385 [2020-09-24 17:54:32,931 INFO L226 Difference]: Without dead ends: 281 [2020-09-24 17:54:32,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:54:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-24 17:54:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 244. [2020-09-24 17:54:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-24 17:54:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 265 transitions. [2020-09-24 17:54:33,009 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 265 transitions. Word has length 143 [2020-09-24 17:54:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:54:33,010 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 265 transitions. [2020-09-24 17:54:33,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:54:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 265 transitions. [2020-09-24 17:54:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 17:54:33,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:54:33,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:54:33,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:54:33,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:54:33,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:54:33,018 INFO L82 PathProgramCache]: Analyzing trace with hash 713806472, now seen corresponding path program 1 times [2020-09-24 17:54:33,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:54:33,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742401385] [2020-09-24 17:54:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:54:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:33,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 17:54:38,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:54:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 17:54:38,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:54:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 17:54:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:54:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:38,381 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:54:38,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:54:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:38,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:54:38,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 17:54:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:54:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:38,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:38,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:54:38,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:38,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:54:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:38,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:38,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:54:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:38,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:54:38,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:38,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:54:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:38,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:38,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:38,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:38,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:38,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 17:54:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:38,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:54:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:54:38,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:54:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 17:54:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:54:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 17:54:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:38,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:38,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:54:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 17:54:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:38,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:38,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:54:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:54:38,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742401385] [2020-09-24 17:54:38,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:54:38,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:54:38,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921264968] [2020-09-24 17:54:38,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:54:38,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:54:38,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:54:38,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:54:38,665 INFO L87 Difference]: Start difference. First operand 244 states and 265 transitions. Second operand 5 states. [2020-09-24 17:54:39,338 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:41,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:54:41,405 INFO L93 Difference]: Finished difference Result 582 states and 682 transitions. [2020-09-24 17:54:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:54:41,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 17:54:41,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:54:41,413 INFO L225 Difference]: With dead ends: 582 [2020-09-24 17:54:41,413 INFO L226 Difference]: Without dead ends: 448 [2020-09-24 17:54:41,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:54:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-09-24 17:54:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 368. [2020-09-24 17:54:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-09-24 17:54:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 411 transitions. [2020-09-24 17:54:41,489 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 411 transitions. Word has length 156 [2020-09-24 17:54:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:54:41,489 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 411 transitions. [2020-09-24 17:54:41,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:54:41,490 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 411 transitions. [2020-09-24 17:54:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 17:54:41,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:54:41,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:54:41,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:54:41,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:54:41,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:54:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1380327011, now seen corresponding path program 1 times [2020-09-24 17:54:41,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:54:41,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702407780] [2020-09-24 17:54:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:54:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:44,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:46,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:46,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 17:54:46,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:54:46,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 17:54:46,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:54:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-24 17:54:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:54:46,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:46,934 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:54:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:54:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:47,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:47,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:54:47,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 17:54:47,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:54:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:47,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:47,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:47,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:54:47,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:54:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:47,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:47,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:54:47,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:47,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:54:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:47,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:47,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:47,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:54:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:54:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:47,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:47,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:47,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:54:47,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:54:47,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 17:54:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:47,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:47,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:54:47,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:54:47,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:54:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:54:47,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:47,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 17:54:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:47,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:47,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:47,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:47,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:54:47,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:54:47,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:47,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:54:47,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:47,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 17:54:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:54:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:54:47,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:54:47,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:54:47,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:54:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:54:47,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:54:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:54:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:54:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:54:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:54:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:54:47,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702407780] [2020-09-24 17:54:47,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:54:47,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:54:47,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524576195] [2020-09-24 17:54:47,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:54:47,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:54:47,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:54:47,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:54:47,226 INFO L87 Difference]: Start difference. First operand 368 states and 411 transitions. Second operand 9 states. [2020-09-24 17:54:47,715 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:49,290 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-09-24 17:54:49,905 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 191 [2020-09-24 17:54:50,184 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:50,516 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 17:54:50,829 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 17:54:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:54:51,072 INFO L93 Difference]: Finished difference Result 577 states and 678 transitions. [2020-09-24 17:54:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:54:51,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-24 17:54:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:54:51,074 INFO L225 Difference]: With dead ends: 577 [2020-09-24 17:54:51,074 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:54:51,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:54:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:54:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:54:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:54:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:54:51,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2020-09-24 17:54:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:54:51,078 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:54:51,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:54:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:54:51,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:54:51,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:54:51,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:54:51,310 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:51,469 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:51,627 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:51,791 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:51,909 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-24 17:54:52,073 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:52,226 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:52,378 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:52,531 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:52,676 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:52,797 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-24 17:54:52,901 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-24 17:54:53,217 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-24 17:54:53,523 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-24 17:54:53,832 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-24 17:54:53,971 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:54:54,130 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:54,278 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:54,426 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:54,570 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:54,719 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:54,867 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:55,012 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:55,175 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:55,322 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:55,470 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:55,618 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:55,767 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:55,919 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:56,067 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:56,310 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 6 [2020-09-24 17:54:56,459 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:56,607 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:56,751 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:56,905 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:57,233 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 17:54:57,553 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 17:54:57,865 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 17:54:58,099 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-24 17:54:58,454 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:58,606 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:58,753 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:58,897 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:59,045 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:59,197 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:59,347 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:59,498 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:59,647 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:54:59,790 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:54:59,947 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:55:00,096 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:00,248 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:55:00,400 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:00,549 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:00,697 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:00,845 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:00,988 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:55:01,302 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 17:55:01,615 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 17:55:01,927 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 17:55:02,161 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-24 17:55:02,311 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:02,459 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:02,604 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:55:03,037 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-24 17:55:03,247 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-24 17:55:03,514 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-24 17:55:03,793 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-24 17:55:04,212 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-24 17:55:04,437 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 8 [2020-09-24 17:55:04,718 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:55:05,126 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 11 [2020-09-24 17:55:05,308 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-24 17:55:05,477 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20