/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:43:09,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:43:09,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:43:09,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:43:09,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:43:09,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:43:09,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:43:09,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:43:09,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:43:09,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:43:09,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:43:09,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:43:09,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:43:09,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:43:09,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:43:09,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:43:09,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:43:09,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:43:09,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:43:09,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:43:09,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:43:09,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:43:09,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:43:09,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:43:09,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:43:09,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:43:09,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:43:09,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:43:09,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:43:09,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:43:09,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:43:09,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:43:09,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:43:09,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:43:09,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:43:09,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:43:09,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:43:09,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:43:09,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:43:09,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:43:09,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:43:09,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:43:09,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:43:09,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:43:09,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:43:09,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:43:09,816 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:43:09,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:43:09,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:43:09,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:43:09,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:43:09,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:43:09,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:43:09,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:43:09,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:43:09,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:43:09,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:43:09,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:43:09,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:43:09,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:43:09,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:43:09,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:43:09,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:43:09,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:43:09,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:43:09,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:43:09,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:43:09,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:43:09,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:43:09,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:43:09,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:43:09,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:43:10,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:43:10,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:43:10,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:43:10,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:43:10,333 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:43:10,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product20.cil.c [2020-09-25 01:43:10,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86b203133/3c9a8d4936b24df3b6791030d7e143a6/FLAG91485cdd4 [2020-09-25 01:43:11,021 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:43:11,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product20.cil.c [2020-09-25 01:43:11,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86b203133/3c9a8d4936b24df3b6791030d7e143a6/FLAG91485cdd4 [2020-09-25 01:43:11,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86b203133/3c9a8d4936b24df3b6791030d7e143a6 [2020-09-25 01:43:11,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:43:11,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:43:11,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:43:11,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:43:11,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:43:11,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:43:11" (1/1) ... [2020-09-25 01:43:11,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c53af82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:11, skipping insertion in model container [2020-09-25 01:43:11,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:43:11" (1/1) ... [2020-09-25 01:43:11,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:43:11,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:43:11,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:43:11,964 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:43:12,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:43:12,086 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:43:12,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12 WrapperNode [2020-09-25 01:43:12,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:43:12,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:43:12,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:43:12,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:43:12,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (1/1) ... [2020-09-25 01:43:12,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (1/1) ... [2020-09-25 01:43:12,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (1/1) ... [2020-09-25 01:43:12,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (1/1) ... [2020-09-25 01:43:12,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (1/1) ... [2020-09-25 01:43:12,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (1/1) ... [2020-09-25 01:43:12,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (1/1) ... [2020-09-25 01:43:12,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:43:12,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:43:12,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:43:12,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:43:12,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:43:12,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:43:12,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:43:12,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:43:12,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:43:12,295 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:43:12,295 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:43:12,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:43:12,296 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:43:12,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:43:12,296 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:43:12,296 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:43:12,297 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:43:12,297 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:43:12,297 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:43:12,297 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:43:12,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:43:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:43:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:43:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:43:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:43:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:43:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:43:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:43:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:43:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:43:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:43:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:43:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:43:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:43:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:43:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:43:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:43:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:43:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:43:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:43:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:43:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:43:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:43:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-25 01:43:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:43:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:43:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:43:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:43:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:43:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:43:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:43:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:43:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:43:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:43:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:43:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:43:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:43:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:43:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:43:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:43:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:43:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:43:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:43:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:43:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:43:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:43:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:43:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:43:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:43:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:43:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-25 01:43:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:43:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:43:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:43:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:43:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:43:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:43:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:43:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:43:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:43:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:43:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:43:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:43:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:43:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:43:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:43:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:43:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:43:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:43:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:43:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:43:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:43:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:43:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:43:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:43:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:43:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:43:13,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:43:13,575 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:43:13,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:43:13 BoogieIcfgContainer [2020-09-25 01:43:13,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:43:13,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:43:13,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:43:13,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:43:13,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:43:11" (1/3) ... [2020-09-25 01:43:13,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8ed409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:43:13, skipping insertion in model container [2020-09-25 01:43:13,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:12" (2/3) ... [2020-09-25 01:43:13,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8ed409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:43:13, skipping insertion in model container [2020-09-25 01:43:13,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:43:13" (3/3) ... [2020-09-25 01:43:13,593 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product20.cil.c [2020-09-25 01:43:13,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:43:13,616 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:43:13,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:43:13,671 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:43:13,671 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:43:13,671 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:43:13,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:43:13,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:43:13,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:43:13,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:43:13,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:43:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-09-25 01:43:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:43:13,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:43:13,717 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] [2020-09-25 01:43:13,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:43:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:43:13,726 INFO L82 PathProgramCache]: Analyzing trace with hash 253748862, now seen corresponding path program 1 times [2020-09-25 01:43:13,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:43:13,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133693256] [2020-09-25 01:43:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:43:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:17,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:19,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:19,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:43:19,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:43:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 01:43:19,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:43:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:43:19,560 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:19,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:43:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:19,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:19,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:43:19,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:19,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 01:43:19,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:19,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:19,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:43:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:19,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:19,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:19,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:19,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:43:19,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:19,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:19,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:43:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:19,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:19,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:19,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:19,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:19,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:19,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:43:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:19,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:19,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:19,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:19,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:43:19,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:19,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:19,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:43:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:19,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:19,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:19,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:43:19,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:19,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:19,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:43:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:19,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:19,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:19,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:43:19,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:19,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:43:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:19,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:19,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:19,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:19,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:43:19,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:19,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:19,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:43:19,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133693256] [2020-09-25 01:43:19,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:43:19,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:43:19,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035642831] [2020-09-25 01:43:19,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:43:19,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:43:19,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:43:19,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:43:19,961 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2020-09-25 01:43:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:43:21,393 INFO L93 Difference]: Finished difference Result 436 states and 522 transitions. [2020-09-25 01:43:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:43:21,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:43:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:43:21,419 INFO L225 Difference]: With dead ends: 436 [2020-09-25 01:43:21,419 INFO L226 Difference]: Without dead ends: 276 [2020-09-25 01:43:21,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:43:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-25 01:43:21,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 234. [2020-09-25 01:43:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 01:43:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 253 transitions. [2020-09-25 01:43:21,623 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 253 transitions. Word has length 142 [2020-09-25 01:43:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:43:21,625 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 253 transitions. [2020-09-25 01:43:21,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:43:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 253 transitions. [2020-09-25 01:43:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:43:21,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:43:21,639 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] [2020-09-25 01:43:21,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:43:21,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:43:21,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:43:21,643 INFO L82 PathProgramCache]: Analyzing trace with hash 548958349, now seen corresponding path program 1 times [2020-09-25 01:43:21,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:43:21,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486100902] [2020-09-25 01:43:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:43:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:26,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:26,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:43:26,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:43:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 01:43:26,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:43:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:43:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:43:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:43:27,190 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:27,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:43:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:27,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:27,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:43:27,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:27,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 01:43:27,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:43:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:27,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:27,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:43:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:27,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:27,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:27,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:43:27,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:27,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:43:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:27,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:27,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:27,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:43:27,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:43:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:27,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:27,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:27,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:27,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:43:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:27,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:27,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:27,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:27,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:27,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:27,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:43:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:27,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:27,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:27,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:27,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:27,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:43:27,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486100902] [2020-09-25 01:43:27,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:43:27,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:43:27,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514422261] [2020-09-25 01:43:27,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:43:27,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:43:27,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:43:27,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:43:27,443 INFO L87 Difference]: Start difference. First operand 234 states and 253 transitions. Second operand 4 states. [2020-09-25 01:43:28,082 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:43:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:43:28,935 INFO L93 Difference]: Finished difference Result 343 states and 385 transitions. [2020-09-25 01:43:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:43:28,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:43:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:43:28,940 INFO L225 Difference]: With dead ends: 343 [2020-09-25 01:43:28,940 INFO L226 Difference]: Without dead ends: 259 [2020-09-25 01:43:28,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:43:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-25 01:43:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 224. [2020-09-25 01:43:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 01:43:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 240 transitions. [2020-09-25 01:43:29,052 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 240 transitions. Word has length 143 [2020-09-25 01:43:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:43:29,053 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 240 transitions. [2020-09-25 01:43:29,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:43:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 240 transitions. [2020-09-25 01:43:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 01:43:29,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:43:29,060 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] [2020-09-25 01:43:29,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:43:29,061 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:43:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:43:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash 512450906, now seen corresponding path program 1 times [2020-09-25 01:43:29,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:43:29,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390186794] [2020-09-25 01:43:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:43:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:30,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:43:34,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:43:34,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 01:43:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:43:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:43:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:43:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:34,390 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:34,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:43:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:34,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:43:34,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:34,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 01:43:34,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:43:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:34,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:34,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:34,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:34,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:43:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:34,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:34,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:43:34,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:34,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:43:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:34,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:34,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:43:34,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:43:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:34,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:34,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:43:34,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:43:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:43:34,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:43:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:43:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:34,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:43:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:34,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:34,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:34,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 01:43:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:34,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:34,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:34,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:34,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:43:34,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390186794] [2020-09-25 01:43:34,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:43:34,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:43:34,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982658604] [2020-09-25 01:43:34,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:43:34,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:43:34,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:43:34,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:43:34,630 INFO L87 Difference]: Start difference. First operand 224 states and 240 transitions. Second operand 5 states. [2020-09-25 01:43:35,317 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:43:37,014 INFO L93 Difference]: Finished difference Result 518 states and 601 transitions. [2020-09-25 01:43:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:43:37,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 01:43:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:43:37,022 INFO L225 Difference]: With dead ends: 518 [2020-09-25 01:43:37,022 INFO L226 Difference]: Without dead ends: 404 [2020-09-25 01:43:37,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:43:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-09-25 01:43:37,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 328. [2020-09-25 01:43:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-09-25 01:43:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 361 transitions. [2020-09-25 01:43:37,093 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 361 transitions. Word has length 156 [2020-09-25 01:43:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:43:37,093 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 361 transitions. [2020-09-25 01:43:37,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:43:37,094 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 361 transitions. [2020-09-25 01:43:37,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:43:37,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:43:37,097 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] [2020-09-25 01:43:37,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:43:37,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:43:37,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:43:37,098 INFO L82 PathProgramCache]: Analyzing trace with hash 16391841, now seen corresponding path program 1 times [2020-09-25 01:43:37,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:43:37,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135965012] [2020-09-25 01:43:37,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:43:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:37,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 01:43:42,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:43:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 01:43:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:43:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 01:43:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:43:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:42,509 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:42,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:43:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:43:42,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 01:43:42,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:43:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:42,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:42,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:42,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:43:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:42,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:43:42,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:43:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:43:42,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:42,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:43:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:42,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:42,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:42,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:42,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:42,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 01:43:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:43:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:42,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:42,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:43:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:42,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:43:42,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:43:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:43:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:43:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:42,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:42,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:43:42,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:43:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:42,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:43:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:43:42,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135965012] [2020-09-25 01:43:42,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:43:42,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:43:42,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261970850] [2020-09-25 01:43:42,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:43:42,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:43:42,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:43:42,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:43:42,827 INFO L87 Difference]: Start difference. First operand 328 states and 361 transitions. Second operand 9 states. [2020-09-25 01:43:43,271 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:44,425 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:43:44,766 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:43:45,087 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:45,445 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:43:45,754 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:43:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:43:45,972 INFO L93 Difference]: Finished difference Result 527 states and 614 transitions. [2020-09-25 01:43:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:43:45,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-25 01:43:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:43:45,974 INFO L225 Difference]: With dead ends: 527 [2020-09-25 01:43:45,974 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:43:45,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:43:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:43:45,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:43:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:43:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:43:45,977 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2020-09-25 01:43:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:43:45,978 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:43:45,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:43:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:43:45,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:43:45,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:43:45,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:43:46,184 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:46,352 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:46,475 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-25 01:43:46,636 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:46,794 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:46,960 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:47,111 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:47,268 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:47,419 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:47,524 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-25 01:43:47,627 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 6 [2020-09-25 01:43:47,940 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:43:48,252 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:43:48,563 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:43:48,707 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:48,866 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:49,015 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:49,163 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:49,308 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:49,456 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:49,604 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:49,749 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:49,895 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:50,044 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:50,192 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:50,342 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:50,656 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:43:50,969 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:43:51,281 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:43:51,515 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-25 01:43:51,762 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:51,911 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:52,060 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:52,209 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:52,352 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:52,499 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:52,656 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:52,800 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:52,949 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:53,096 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:53,247 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:53,497 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:53,643 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:53,795 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:54,111 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:43:54,425 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:43:54,737 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:43:54,970 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-25 01:43:55,118 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:55,267 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:55,411 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:55,658 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:55,812 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:55,966 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:56,110 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:56,261 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:56,410 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:56,557 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:56,701 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:57,116 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-25 01:43:57,338 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:43:57,548 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-25 01:43:57,782 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:43:57,999 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:43:58,213 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 8 [2020-09-25 01:43:58,480 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:58,893 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 11 [2020-09-25 01:43:59,133 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-25 01:43:59,493 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 8 [2020-09-25 01:43:59,901 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 11 [2020-09-25 01:44:00,140 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:44:00,537 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 8 [2020-09-25 01:44:00,766 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-25 01:44:01,174 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7