/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:40:03,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:40:03,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:40:03,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:40:03,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:40:03,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:40:03,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:40:03,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:40:03,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:40:03,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:40:03,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:40:03,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:40:03,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:40:03,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:40:03,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:40:03,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:40:03,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:40:03,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:40:03,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:40:03,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:40:03,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:40:03,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:40:03,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:40:03,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:40:03,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:40:03,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:40:03,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:40:03,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:40:03,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:40:03,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:40:03,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:40:03,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:40:03,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:40:03,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:40:03,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:40:03,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:40:03,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:40:03,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:40:03,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:40:03,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:40:03,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:40:03,893 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 [2020-08-21 19:40:03,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:40:03,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:40:03,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:40:03,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:40:03,926 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:40:03,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:40:03,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:40:03,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:40:03,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:40:03,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:40:03,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:40:03,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:40:03,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:40:03,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:40:03,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:40:03,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:40:03,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:40:03,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:40:03,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:40:03,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:40:03,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:40:03,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:40:03,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:40:03,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:40:03,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:40:03,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:40:03,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:40:03,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:40:03,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:40:03,931 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:40:04,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:40:04,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:40:04,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:40:04,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:40:04,228 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:40:04,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2020-08-21 19:40:04,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29bbc6f7c/de31b65965bc4680b8f5d9d43e79cc55/FLAGbeb32501d [2020-08-21 19:40:04,777 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:40:04,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2020-08-21 19:40:04,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29bbc6f7c/de31b65965bc4680b8f5d9d43e79cc55/FLAGbeb32501d [2020-08-21 19:40:05,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29bbc6f7c/de31b65965bc4680b8f5d9d43e79cc55 [2020-08-21 19:40:05,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:40:05,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:40:05,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:40:05,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:40:05,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:40:05,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:05,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d492f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05, skipping insertion in model container [2020-08-21 19:40:05,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:05,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:40:05,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:40:05,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:40:05,777 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:40:05,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:40:05,929 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:40:05,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05 WrapperNode [2020-08-21 19:40:05,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:40:05,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:40:05,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:40:05,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:40:05,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:05,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:05,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:05,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:06,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:06,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:06,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (1/1) ... [2020-08-21 19:40:06,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:40:06,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:40:06,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:40:06,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:40:06,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (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 [2020-08-21 19:40:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:40:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:40:06,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:40:06,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:40:06,105 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:40:06,105 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:40:06,105 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 19:40:06,105 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:40:06,106 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:40:06,107 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:40:06,107 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:40:06,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:40:06,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:40:06,108 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:40:06,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:40:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 19:40:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:40:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:40:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:40:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:40:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:40:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:40:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:40:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:40:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:40:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:40:06,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:40:06,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:40:06,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:40:06,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:40:06,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:40:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:40:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 19:40:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 19:40:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 19:40:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:40:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:40:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:40:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:40:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:40:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:40:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:40:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:40:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:40:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:40:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:40:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:40:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:40:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:40:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:40:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:40:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:40:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:40:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:40:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:40:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 19:40:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 19:40:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 19:40:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:40:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:40:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:40:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 19:40:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:40:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:40:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:40:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:40:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:40:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:40:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:40:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:40:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:40:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 19:40:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:40:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:40:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:40:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:40:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:40:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:40:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:40:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:40:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:40:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:40:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:40:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:40:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:40:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:40:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:40:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:40:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:40:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:40:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:40:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:40:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:40:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:40:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:40:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:40:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:40:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:40:07,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:40:07,157 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:40:07,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:40:07 BoogieIcfgContainer [2020-08-21 19:40:07,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:40:07,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:40:07,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:40:07,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:40:07,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:40:05" (1/3) ... [2020-08-21 19:40:07,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:40:07, skipping insertion in model container [2020-08-21 19:40:07,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:40:05" (2/3) ... [2020-08-21 19:40:07,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:40:07, skipping insertion in model container [2020-08-21 19:40:07,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:40:07" (3/3) ... [2020-08-21 19:40:07,170 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2020-08-21 19:40:07,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:40:07,200 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:40:07,214 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:40:07,238 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:40:07,239 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:40:07,239 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:40:07,239 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:40:07,240 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:40:07,240 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:40:07,240 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:40:07,240 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:40:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-21 19:40:07,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 19:40:07,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:07,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:07,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:07,281 INFO L82 PathProgramCache]: Analyzing trace with hash -981984858, now seen corresponding path program 1 times [2020-08-21 19:40:07,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:07,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493819906] [2020-08-21 19:40:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,006 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:08,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:40:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:40:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:08,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493819906] [2020-08-21 19:40:08,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:08,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:40:08,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563147568] [2020-08-21 19:40:08,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:40:08,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:08,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:40:08,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:40:08,163 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 4 states. [2020-08-21 19:40:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:09,317 INFO L93 Difference]: Finished difference Result 330 states and 424 transitions. [2020-08-21 19:40:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:40:09,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 19:40:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:09,334 INFO L225 Difference]: With dead ends: 330 [2020-08-21 19:40:09,334 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 19:40:09,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:40:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 19:40:09,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 149. [2020-08-21 19:40:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-21 19:40:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-21 19:40:09,477 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 59 [2020-08-21 19:40:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:09,477 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-21 19:40:09,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:40:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-21 19:40:09,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 19:40:09,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:09,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:09,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:40:09,490 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:09,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:09,491 INFO L82 PathProgramCache]: Analyzing trace with hash 75711308, now seen corresponding path program 1 times [2020-08-21 19:40:09,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:09,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695641389] [2020-08-21 19:40:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,898 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:40:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:10,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:40:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:10,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695641389] [2020-08-21 19:40:10,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:10,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:10,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095202270] [2020-08-21 19:40:10,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:10,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:10,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:10,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:10,016 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-21 19:40:10,423 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:10,741 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:10,996 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:11,227 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:12,198 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:14,218 INFO L93 Difference]: Finished difference Result 506 states and 636 transitions. [2020-08-21 19:40:14,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 19:40:14,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 19:40:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:14,225 INFO L225 Difference]: With dead ends: 506 [2020-08-21 19:40:14,226 INFO L226 Difference]: Without dead ends: 385 [2020-08-21 19:40:14,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:14,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-08-21 19:40:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 327. [2020-08-21 19:40:14,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-08-21 19:40:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 402 transitions. [2020-08-21 19:40:14,325 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 402 transitions. Word has length 64 [2020-08-21 19:40:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:14,325 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 402 transitions. [2020-08-21 19:40:14,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 402 transitions. [2020-08-21 19:40:14,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 19:40:14,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:14,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:14,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:40:14,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:14,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:14,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1055869647, now seen corresponding path program 1 times [2020-08-21 19:40:14,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:14,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876730143] [2020-08-21 19:40:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,618 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:40:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:40:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:40:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 19:40:14,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876730143] [2020-08-21 19:40:14,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:14,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:14,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896980315] [2020-08-21 19:40:14,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:14,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:14,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:14,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:14,741 INFO L87 Difference]: Start difference. First operand 327 states and 402 transitions. Second operand 9 states. [2020-08-21 19:40:15,149 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:15,745 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:16,875 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:17,131 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:17,427 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:17,708 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:18,613 INFO L93 Difference]: Finished difference Result 877 states and 1180 transitions. [2020-08-21 19:40:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 19:40:18,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 19:40:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:18,621 INFO L225 Difference]: With dead ends: 877 [2020-08-21 19:40:18,622 INFO L226 Difference]: Without dead ends: 578 [2020-08-21 19:40:18,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:40:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-08-21 19:40:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 488. [2020-08-21 19:40:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-08-21 19:40:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 609 transitions. [2020-08-21 19:40:18,731 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 609 transitions. Word has length 70 [2020-08-21 19:40:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:18,732 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 609 transitions. [2020-08-21 19:40:18,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 609 transitions. [2020-08-21 19:40:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 19:40:18,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:18,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:18,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:40:18,735 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:18,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:18,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2082867985, now seen corresponding path program 1 times [2020-08-21 19:40:18,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:18,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439892214] [2020-08-21 19:40:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,039 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 19:40:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 19:40:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:19,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439892214] [2020-08-21 19:40:19,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:19,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:19,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451775742] [2020-08-21 19:40:19,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:19,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:19,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:19,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:19,199 INFO L87 Difference]: Start difference. First operand 488 states and 609 transitions. Second operand 9 states. [2020-08-21 19:40:19,579 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:20,539 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:20,856 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:21,139 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:21,416 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:22,943 INFO L93 Difference]: Finished difference Result 1509 states and 2131 transitions. [2020-08-21 19:40:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:40:22,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-08-21 19:40:22,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:22,952 INFO L225 Difference]: With dead ends: 1509 [2020-08-21 19:40:22,952 INFO L226 Difference]: Without dead ends: 1049 [2020-08-21 19:40:22,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:40:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-08-21 19:40:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 885. [2020-08-21 19:40:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-08-21 19:40:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1121 transitions. [2020-08-21 19:40:23,138 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1121 transitions. Word has length 107 [2020-08-21 19:40:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:23,141 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1121 transitions. [2020-08-21 19:40:23,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1121 transitions. [2020-08-21 19:40:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 19:40:23,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:23,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:23,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:40:23,153 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:23,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:23,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1132412678, now seen corresponding path program 1 times [2020-08-21 19:40:23,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:23,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94615615] [2020-08-21 19:40:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,421 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:40:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:40:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 19:40:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 19:40:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:23,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94615615] [2020-08-21 19:40:23,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:23,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:40:23,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2667375] [2020-08-21 19:40:23,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:40:23,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:23,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:40:23,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:40:23,644 INFO L87 Difference]: Start difference. First operand 885 states and 1121 transitions. Second operand 10 states. [2020-08-21 19:40:24,247 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:25,016 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:25,263 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:40:25,518 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:25,785 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:26,773 INFO L93 Difference]: Finished difference Result 1782 states and 2351 transitions. [2020-08-21 19:40:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:40:26,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-21 19:40:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:26,781 INFO L225 Difference]: With dead ends: 1782 [2020-08-21 19:40:26,781 INFO L226 Difference]: Without dead ends: 925 [2020-08-21 19:40:26,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:40:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-08-21 19:40:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 815. [2020-08-21 19:40:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-08-21 19:40:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 973 transitions. [2020-08-21 19:40:26,926 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 973 transitions. Word has length 103 [2020-08-21 19:40:26,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:26,928 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 973 transitions. [2020-08-21 19:40:26,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:40:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 973 transitions. [2020-08-21 19:40:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 19:40:26,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:26,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:26,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:40:26,932 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:26,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:26,932 INFO L82 PathProgramCache]: Analyzing trace with hash 85944846, now seen corresponding path program 1 times [2020-08-21 19:40:26,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:26,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502906097] [2020-08-21 19:40:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,218 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 19:40:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 19:40:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:27,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502906097] [2020-08-21 19:40:27,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:27,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 19:40:27,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938607722] [2020-08-21 19:40:27,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 19:40:27,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:27,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 19:40:27,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:40:27,406 INFO L87 Difference]: Start difference. First operand 815 states and 973 transitions. Second operand 11 states. [2020-08-21 19:40:27,889 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:28,127 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:28,349 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:29,065 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:29,321 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:29,561 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:30,590 INFO L93 Difference]: Finished difference Result 1512 states and 1898 transitions. [2020-08-21 19:40:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:40:30,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-21 19:40:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:30,597 INFO L225 Difference]: With dead ends: 1512 [2020-08-21 19:40:30,597 INFO L226 Difference]: Without dead ends: 725 [2020-08-21 19:40:30,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:40:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-08-21 19:40:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 652. [2020-08-21 19:40:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-08-21 19:40:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 763 transitions. [2020-08-21 19:40:30,702 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 763 transitions. Word has length 107 [2020-08-21 19:40:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:30,702 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 763 transitions. [2020-08-21 19:40:30,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 19:40:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 763 transitions. [2020-08-21 19:40:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 19:40:30,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:30,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:30,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:40:30,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1945052595, now seen corresponding path program 1 times [2020-08-21 19:40:30,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:30,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445888481] [2020-08-21 19:40:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,055 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:31,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 19:40:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 19:40:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 19:40:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 19:40:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 19:40:31,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445888481] [2020-08-21 19:40:31,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:31,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 19:40:31,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540978689] [2020-08-21 19:40:31,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:40:31,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:31,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:40:31,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:40:31,254 INFO L87 Difference]: Start difference. First operand 652 states and 763 transitions. Second operand 12 states. [2020-08-21 19:40:31,683 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:32,300 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:32,987 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:33,335 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:33,583 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:33,862 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:34,133 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:36,269 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:36,533 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:37,134 INFO L93 Difference]: Finished difference Result 1915 states and 2425 transitions. [2020-08-21 19:40:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 19:40:37,138 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-21 19:40:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:37,147 INFO L225 Difference]: With dead ends: 1915 [2020-08-21 19:40:37,148 INFO L226 Difference]: Without dead ends: 1473 [2020-08-21 19:40:37,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 19:40:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-08-21 19:40:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1339. [2020-08-21 19:40:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-08-21 19:40:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1569 transitions. [2020-08-21 19:40:37,336 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1569 transitions. Word has length 111 [2020-08-21 19:40:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:37,336 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 1569 transitions. [2020-08-21 19:40:37,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:40:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1569 transitions. [2020-08-21 19:40:37,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-21 19:40:37,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:37,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:37,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:40:37,341 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:37,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:37,342 INFO L82 PathProgramCache]: Analyzing trace with hash -451795391, now seen corresponding path program 1 times [2020-08-21 19:40:37,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:37,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274796157] [2020-08-21 19:40:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,691 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 19:40:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:37,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 19:40:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 19:40:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 19:40:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-21 19:40:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-21 19:40:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 19:40:38,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274796157] [2020-08-21 19:40:38,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:38,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 19:40:38,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472054918] [2020-08-21 19:40:38,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 19:40:38,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:38,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 19:40:38,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:38,203 INFO L87 Difference]: Start difference. First operand 1339 states and 1569 transitions. Second operand 16 states. [2020-08-21 19:40:38,804 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:40:39,143 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 19:40:39,419 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 19:40:39,699 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 19:40:40,381 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 19:40:40,664 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 19:40:41,016 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 19:40:41,531 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 19:40:41,834 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 19:40:43,194 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:43,911 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 19:40:44,456 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 19:40:44,812 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:45,386 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:45,816 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 19:40:46,426 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 19:40:47,005 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-21 19:40:47,488 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 19:40:48,017 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 19:40:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:48,818 INFO L93 Difference]: Finished difference Result 2929 states and 3560 transitions. [2020-08-21 19:40:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-21 19:40:48,818 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 170 [2020-08-21 19:40:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:48,827 INFO L225 Difference]: With dead ends: 2929 [2020-08-21 19:40:48,828 INFO L226 Difference]: Without dead ends: 1794 [2020-08-21 19:40:48,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-21 19:40:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2020-08-21 19:40:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1597. [2020-08-21 19:40:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1597 states. [2020-08-21 19:40:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 1857 transitions. [2020-08-21 19:40:49,143 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 1857 transitions. Word has length 170 [2020-08-21 19:40:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:49,144 INFO L479 AbstractCegarLoop]: Abstraction has 1597 states and 1857 transitions. [2020-08-21 19:40:49,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 19:40:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 1857 transitions. [2020-08-21 19:40:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-08-21 19:40:49,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:49,159 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:49,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:40:49,159 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:49,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:49,160 INFO L82 PathProgramCache]: Analyzing trace with hash 913052362, now seen corresponding path program 1 times [2020-08-21 19:40:49,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:49,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884611924] [2020-08-21 19:40:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,494 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:49,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 19:40:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 19:40:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 19:40:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:40:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 19:40:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 19:40:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 19:40:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-21 19:40:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-08-21 19:40:50,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884611924] [2020-08-21 19:40:50,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:50,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 19:40:50,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632868061] [2020-08-21 19:40:50,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 19:40:50,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:50,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 19:40:50,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 19:40:50,090 INFO L87 Difference]: Start difference. First operand 1597 states and 1857 transitions. Second operand 15 states. [2020-08-21 19:40:52,281 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:52,528 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:52,796 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:53,080 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:53,334 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:54,248 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:54,830 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 19:40:55,318 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 19:40:55,827 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:58,549 INFO L93 Difference]: Finished difference Result 4505 states and 5445 transitions. [2020-08-21 19:40:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 19:40:58,550 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 299 [2020-08-21 19:40:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:58,566 INFO L225 Difference]: With dead ends: 4505 [2020-08-21 19:40:58,566 INFO L226 Difference]: Without dead ends: 2741 [2020-08-21 19:40:58,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 19:40:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2020-08-21 19:40:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2307. [2020-08-21 19:40:58,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2307 states. [2020-08-21 19:40:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2693 transitions. [2020-08-21 19:40:58,996 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2693 transitions. Word has length 299 [2020-08-21 19:40:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:58,999 INFO L479 AbstractCegarLoop]: Abstraction has 2307 states and 2693 transitions. [2020-08-21 19:40:58,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 19:40:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2693 transitions. [2020-08-21 19:40:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-21 19:40:59,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:59,010 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:59,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:40:59,011 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:59,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:59,011 INFO L82 PathProgramCache]: Analyzing trace with hash -797271387, now seen corresponding path program 1 times [2020-08-21 19:40:59,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:59,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234151468] [2020-08-21 19:40:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,307 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 19:40:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 19:40:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:40:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:40:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-21 19:40:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:40:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:40:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 19:40:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-21 19:40:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-21 19:40:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-21 19:40:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 85 proven. 38 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-08-21 19:40:59,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234151468] [2020-08-21 19:40:59,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:59,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 19:40:59,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653394711] [2020-08-21 19:40:59,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 19:40:59,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:59,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 19:40:59,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:59,727 INFO L87 Difference]: Start difference. First operand 2307 states and 2693 transitions. Second operand 16 states. [2020-08-21 19:41:00,804 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:41:01,124 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 19:41:01,389 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:41:01,623 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:41:02,241 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191