/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:09:27,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:09:27,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:09:27,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:09:27,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:09:27,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:09:27,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:09:27,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:09:27,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:09:27,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:09:27,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:09:27,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:09:27,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:09:27,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:09:27,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:09:27,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:09:27,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:09:27,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:09:27,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:09:27,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:09:27,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:09:27,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:09:27,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:09:27,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:09:27,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:09:27,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:09:27,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:09:27,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:09:27,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:09:27,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:09:27,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:09:27,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:09:27,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:09:27,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:09:27,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:09:27,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:09:27,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:09:27,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:09:27,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:09:27,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:09:27,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:09:27,136 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 [2020-08-22 02:09:27,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:09:27,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:09:27,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:09:27,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:09:27,163 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:09:27,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:09:27,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:09:27,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:09:27,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:09:27,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:09:27,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:09:27,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:09:27,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:09:27,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:09:27,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:09:27,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:09:27,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:09:27,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:09:27,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:09:27,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:09:27,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:09:27,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:09:27,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:09:27,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:09:27,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:09:27,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:09:27,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:09:27,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:09:27,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:09:27,168 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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:09:27,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:09:27,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:09:27,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:09:27,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:09:27,506 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:09:27,506 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-08-22 02:09:27,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc9b7a1b/4fe88272d75a44b787c885fb7080f80f/FLAGa17c68c2c [2020-08-22 02:09:28,040 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:09:28,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-08-22 02:09:28,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc9b7a1b/4fe88272d75a44b787c885fb7080f80f/FLAGa17c68c2c [2020-08-22 02:09:28,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc9b7a1b/4fe88272d75a44b787c885fb7080f80f [2020-08-22 02:09:28,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:09:28,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:09:28,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:09:28,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:09:28,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:09:28,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28, skipping insertion in model container [2020-08-22 02:09:28,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:09:28,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:09:28,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:09:28,679 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:09:28,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:09:28,823 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:09:28,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28 WrapperNode [2020-08-22 02:09:28,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:09:28,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:09:28,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:09:28,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:09:28,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (1/1) ... [2020-08-22 02:09:28,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:09:28,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:09:28,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:09:28,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:09:28,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (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 [2020-08-22 02:09:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:09:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:09:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:09:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:09:29,004 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:09:29,004 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:09:29,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:09:29,004 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:09:29,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:09:29,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:09:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:09:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:09:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:09:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:09:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:09:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:09:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:09:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:09:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:09:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:09:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:09:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:09:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:09:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:09:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:09:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:09:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:09:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:09:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:09:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:09:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:09:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:09:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:09:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:09:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:09:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:09:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:09:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:09:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:09:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:09:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:09:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:09:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:09:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:09:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:09:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:09:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:09:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:09:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:09:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:09:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:09:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:09:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:09:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:09:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:09:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:09:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:09:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:09:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:09:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:09:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:09:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:09:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:09:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:09:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:09:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:09:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:09:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:09:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:09:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:09:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:09:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:09:29,014 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:09:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:09:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:09:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:09:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:09:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:09:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:09:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:09:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:09:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:09:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:09:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:09:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:09:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:09:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:09:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:09:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:09:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:09:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:09:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:09:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:09:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:09:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:09:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:09:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:09:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:09:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:09:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:09:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:09:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:09:30,132 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:09:30,133 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:09:30,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:09:30 BoogieIcfgContainer [2020-08-22 02:09:30,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:09:30,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:09:30,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:09:30,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:09:30,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:09:28" (1/3) ... [2020-08-22 02:09:30,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337edb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:09:30, skipping insertion in model container [2020-08-22 02:09:30,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:09:28" (2/3) ... [2020-08-22 02:09:30,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337edb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:09:30, skipping insertion in model container [2020-08-22 02:09:30,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:09:30" (3/3) ... [2020-08-22 02:09:30,148 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2020-08-22 02:09:30,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:09:30,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:09:30,182 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:09:30,209 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:09:30,209 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:09:30,209 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:09:30,209 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:09:30,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:09:30,210 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:09:30,210 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:09:30,210 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:09:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-22 02:09:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 02:09:30,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:30,246 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] [2020-08-22 02:09:30,247 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:30,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1133755032, now seen corresponding path program 1 times [2020-08-22 02:09:30,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:30,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215259572] [2020-08-22 02:09:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,888 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:30,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:30,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:09:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:31,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:09:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:09:31,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215259572] [2020-08-22 02:09:31,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:31,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:09:31,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110818806] [2020-08-22 02:09:31,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:09:31,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:31,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:09:31,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:09:31,048 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-22 02:09:32,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:32,278 INFO L93 Difference]: Finished difference Result 350 states and 444 transitions. [2020-08-22 02:09:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:09:32,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 02:09:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:32,297 INFO L225 Difference]: With dead ends: 350 [2020-08-22 02:09:32,297 INFO L226 Difference]: Without dead ends: 192 [2020-08-22 02:09:32,303 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 [2020-08-22 02:09:32,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-08-22 02:09:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 159. [2020-08-22 02:09:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 02:09:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2020-08-22 02:09:32,422 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 59 [2020-08-22 02:09:32,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:32,423 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2020-08-22 02:09:32,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:09:32,423 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2020-08-22 02:09:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 02:09:32,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:32,471 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] [2020-08-22 02:09:32,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:09:32,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:32,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash -138893135, now seen corresponding path program 1 times [2020-08-22 02:09:32,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:32,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529314371] [2020-08-22 02:09:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,797 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:32,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:09:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:09:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:09:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:09:32,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529314371] [2020-08-22 02:09:32,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:32,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:09:32,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763756196] [2020-08-22 02:09:32,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:09:32,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:32,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:09:32,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:09:32,862 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 5 states. [2020-08-22 02:09:33,373 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:34,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:34,479 INFO L93 Difference]: Finished difference Result 289 states and 348 transitions. [2020-08-22 02:09:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:09:34,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 02:09:34,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:34,483 INFO L225 Difference]: With dead ends: 289 [2020-08-22 02:09:34,484 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 02:09:34,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:09:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 02:09:34,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 150. [2020-08-22 02:09:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 02:09:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2020-08-22 02:09:34,528 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 60 [2020-08-22 02:09:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:34,528 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2020-08-22 02:09:34,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:09:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-08-22 02:09:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 02:09:34,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:34,532 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] [2020-08-22 02:09:34,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:09:34,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:34,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:34,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1740604635, now seen corresponding path program 1 times [2020-08-22 02:09:34,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:34,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936093815] [2020-08-22 02:09:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,866 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:09:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:09:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:09:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:09:35,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936093815] [2020-08-22 02:09:35,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:35,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:09:35,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967948630] [2020-08-22 02:09:35,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:09:35,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:35,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:09:35,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:09:35,007 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 9 states. [2020-08-22 02:09:35,422 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:35,746 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:36,023 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:36,271 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:37,234 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:39,286 INFO L93 Difference]: Finished difference Result 499 states and 610 transitions. [2020-08-22 02:09:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:09:39,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-22 02:09:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:39,293 INFO L225 Difference]: With dead ends: 499 [2020-08-22 02:09:39,293 INFO L226 Difference]: Without dead ends: 377 [2020-08-22 02:09:39,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:09:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-22 02:09:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 320. [2020-08-22 02:09:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-22 02:09:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 384 transitions. [2020-08-22 02:09:39,424 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 384 transitions. Word has length 64 [2020-08-22 02:09:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:39,425 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 384 transitions. [2020-08-22 02:09:39,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:09:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 384 transitions. [2020-08-22 02:09:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:09:39,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:39,429 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] [2020-08-22 02:09:39,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:09:39,429 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:39,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:39,430 INFO L82 PathProgramCache]: Analyzing trace with hash 659595443, now seen corresponding path program 1 times [2020-08-22 02:09:39,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:39,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14765015] [2020-08-22 02:09:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,751 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:39,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:09:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:09:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:09:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:09:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:09:39,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14765015] [2020-08-22 02:09:39,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:39,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:09:39,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024702936] [2020-08-22 02:09:39,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:09:39,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:39,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:09:39,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:09:39,882 INFO L87 Difference]: Start difference. First operand 320 states and 384 transitions. Second operand 9 states. [2020-08-22 02:09:40,278 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:40,933 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:41,942 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:42,199 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:42,492 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:42,771 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:43,572 INFO L93 Difference]: Finished difference Result 803 states and 1032 transitions. [2020-08-22 02:09:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:09:43,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 02:09:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:43,579 INFO L225 Difference]: With dead ends: 803 [2020-08-22 02:09:43,580 INFO L226 Difference]: Without dead ends: 511 [2020-08-22 02:09:43,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:09:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-08-22 02:09:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 447. [2020-08-22 02:09:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-08-22 02:09:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 535 transitions. [2020-08-22 02:09:43,676 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 535 transitions. Word has length 70 [2020-08-22 02:09:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:43,677 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 535 transitions. [2020-08-22 02:09:43,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:09:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 535 transitions. [2020-08-22 02:09:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:09:43,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:43,682 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] [2020-08-22 02:09:43,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:09:43,682 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:43,683 INFO L82 PathProgramCache]: Analyzing trace with hash -73914297, now seen corresponding path program 1 times [2020-08-22 02:09:43,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:43,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643522731] [2020-08-22 02:09:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,944 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:43,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:09:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:09:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:09:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:09:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:09:44,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643522731] [2020-08-22 02:09:44,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:44,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:09:44,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952827817] [2020-08-22 02:09:44,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:09:44,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:44,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:09:44,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:09:44,140 INFO L87 Difference]: Start difference. First operand 447 states and 535 transitions. Second operand 9 states. [2020-08-22 02:09:45,270 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:45,521 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:09:45,775 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:46,015 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:46,906 INFO L93 Difference]: Finished difference Result 956 states and 1224 transitions. [2020-08-22 02:09:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:09:46,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-08-22 02:09:46,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:46,914 INFO L225 Difference]: With dead ends: 956 [2020-08-22 02:09:46,914 INFO L226 Difference]: Without dead ends: 537 [2020-08-22 02:09:46,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:09:46,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-22 02:09:47,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 460. [2020-08-22 02:09:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-08-22 02:09:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2020-08-22 02:09:47,035 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 107 [2020-08-22 02:09:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:47,035 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2020-08-22 02:09:47,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:09:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2020-08-22 02:09:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:09:47,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:47,039 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] [2020-08-22 02:09:47,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:09:47,039 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1854358405, now seen corresponding path program 1 times [2020-08-22 02:09:47,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:47,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268934266] [2020-08-22 02:09:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,304 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:47,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:09:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:09:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:09:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:09:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:09:47,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268934266] [2020-08-22 02:09:47,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:47,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:09:47,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864799084] [2020-08-22 02:09:47,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:09:47,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:47,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:09:47,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:09:47,536 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand 11 states. [2020-08-22 02:09:48,036 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:48,301 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:48,538 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:49,290 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:49,558 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:49,798 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:50,799 INFO L93 Difference]: Finished difference Result 979 states and 1248 transitions. [2020-08-22 02:09:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:09:50,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-22 02:09:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:50,805 INFO L225 Difference]: With dead ends: 979 [2020-08-22 02:09:50,805 INFO L226 Difference]: Without dead ends: 547 [2020-08-22 02:09:50,808 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 [2020-08-22 02:09:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-08-22 02:09:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 468. [2020-08-22 02:09:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-22 02:09:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-22 02:09:50,901 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 107 [2020-08-22 02:09:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:50,904 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-22 02:09:50,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:09:50,904 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-22 02:09:50,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:09:50,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:50,906 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] [2020-08-22 02:09:50,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:09:50,908 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:50,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1613818276, now seen corresponding path program 1 times [2020-08-22 02:09:50,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:50,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124921758] [2020-08-22 02:09:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,199 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:09:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:09:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:09:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:09:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:09:51,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124921758] [2020-08-22 02:09:51,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:51,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:09:51,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025255274] [2020-08-22 02:09:51,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:09:51,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:51,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:09:51,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:09:51,368 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 7 states. [2020-08-22 02:09:51,755 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:52,301 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:54,386 INFO L93 Difference]: Finished difference Result 1447 states and 1864 transitions. [2020-08-22 02:09:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:09:54,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-22 02:09:54,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:54,393 INFO L225 Difference]: With dead ends: 1447 [2020-08-22 02:09:54,394 INFO L226 Difference]: Without dead ends: 1007 [2020-08-22 02:09:54,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:09:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-08-22 02:09:54,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 933. [2020-08-22 02:09:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-08-22 02:09:54,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1131 transitions. [2020-08-22 02:09:54,649 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1131 transitions. Word has length 107 [2020-08-22 02:09:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:54,649 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1131 transitions. [2020-08-22 02:09:54,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:09:54,650 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1131 transitions. [2020-08-22 02:09:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-22 02:09:54,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:54,659 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] [2020-08-22 02:09:54,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:09:54,660 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:54,660 INFO L82 PathProgramCache]: Analyzing trace with hash 608509898, now seen corresponding path program 1 times [2020-08-22 02:09:54,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:54,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738919725] [2020-08-22 02:09:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,108 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:55,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:09:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:09:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:09:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 02:09:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:09:55,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738919725] [2020-08-22 02:09:55,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:55,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:09:55,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011669956] [2020-08-22 02:09:55,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:09:55,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:55,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:09:55,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:09:55,325 INFO L87 Difference]: Start difference. First operand 933 states and 1131 transitions. Second operand 12 states. [2020-08-22 02:09:55,944 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:56,592 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:57,243 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:57,574 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:57,820 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:58,082 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:58,354 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:00,459 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:10:00,763 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:10:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:10:01,448 INFO L93 Difference]: Finished difference Result 2649 states and 3420 transitions. [2020-08-22 02:10:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 02:10:01,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-22 02:10:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:10:01,463 INFO L225 Difference]: With dead ends: 2649 [2020-08-22 02:10:01,464 INFO L226 Difference]: Without dead ends: 1932 [2020-08-22 02:10:01,467 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 [2020-08-22 02:10:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2020-08-22 02:10:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1638. [2020-08-22 02:10:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-08-22 02:10:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1972 transitions. [2020-08-22 02:10:01,721 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1972 transitions. Word has length 111 [2020-08-22 02:10:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:10:01,722 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 1972 transitions. [2020-08-22 02:10:01,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:10:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1972 transitions. [2020-08-22 02:10:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 02:10:01,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:10:01,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:10:01,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:10:01,727 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:10:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:10:01,727 INFO L82 PathProgramCache]: Analyzing trace with hash 866799866, now seen corresponding path program 1 times [2020-08-22 02:10:01,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:10:01,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899735417] [2020-08-22 02:10:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:10:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,074 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:10:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:10:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:10:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:10:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:10:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:10:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:10:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:10:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:10:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:10:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:10:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:10:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 02:10:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:10:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 02:10:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:10:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 02:10:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 02:10:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 02:10:02,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899735417] [2020-08-22 02:10:02,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:10:02,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:10:02,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111333010] [2020-08-22 02:10:02,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:10:02,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:10:02,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:10:02,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:10:02,397 INFO L87 Difference]: Start difference. First operand 1638 states and 1972 transitions. Second operand 16 states. [2020-08-22 02:10:03,219 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:03,691 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:10:03,955 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:10:04,216 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:10:04,826 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:10:05,131 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:10:05,493 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:10:05,767 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:10:06,925 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:10:07,396 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:07,699 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:08,029 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:08,583 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:10:08,994 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:09,365 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:10:09,989 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:10,302 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:10:10,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:10:10,942 INFO L93 Difference]: Finished difference Result 3517 states and 4366 transitions. [2020-08-22 02:10:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 02:10:10,943 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-22 02:10:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:10:10,958 INFO L225 Difference]: With dead ends: 3517 [2020-08-22 02:10:10,959 INFO L226 Difference]: Without dead ends: 2083 [2020-08-22 02:10:10,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 02:10:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-08-22 02:10:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1905. [2020-08-22 02:10:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2020-08-22 02:10:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2254 transitions. [2020-08-22 02:10:11,331 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2254 transitions. Word has length 172 [2020-08-22 02:10:11,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:10:11,332 INFO L479 AbstractCegarLoop]: Abstraction has 1905 states and 2254 transitions. [2020-08-22 02:10:11,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:10:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2254 transitions. [2020-08-22 02:10:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-22 02:10:11,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:10:11,344 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, 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, 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] [2020-08-22 02:10:11,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:10:11,345 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:10:11,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:10:11,345 INFO L82 PathProgramCache]: Analyzing trace with hash 41456611, now seen corresponding path program 1 times [2020-08-22 02:10:11,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:10:11,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074612109] [2020-08-22 02:10:11,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:10:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,643 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:10:11,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:10:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:10:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:10:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:10:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:10:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:10:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:10:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:10:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:10:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:10:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:10:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:10:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:10:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:10:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:10:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:10:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:11,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 02:10:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:10:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:10:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:10:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:10:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 02:10:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 02:10:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 02:10:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:10:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:10:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-22 02:10:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-22 02:10:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 79 proven. 29 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-08-22 02:10:12,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074612109] [2020-08-22 02:10:12,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:10:12,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 02:10:12,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240197101] [2020-08-22 02:10:12,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 02:10:12,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:10:12,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 02:10:12,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:10:12,168 INFO L87 Difference]: Start difference. First operand 1905 states and 2254 transitions. Second operand 15 states. [2020-08-22 02:10:13,285 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:10:13,541 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:13,791 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:14,057 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:10:15,063 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:10:17,005 INFO L93 Difference]: Finished difference Result 5225 states and 6429 transitions. [2020-08-22 02:10:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:10:17,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 307 [2020-08-22 02:10:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:10:17,024 INFO L225 Difference]: With dead ends: 5225 [2020-08-22 02:10:17,024 INFO L226 Difference]: Without dead ends: 3038 [2020-08-22 02:10:17,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-22 02:10:17,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-08-22 02:10:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2622. [2020-08-22 02:10:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-08-22 02:10:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3181 transitions. [2020-08-22 02:10:17,582 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3181 transitions. Word has length 307 [2020-08-22 02:10:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:10:17,583 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3181 transitions. [2020-08-22 02:10:17,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 02:10:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3181 transitions. [2020-08-22 02:10:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-08-22 02:10:17,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:10:17,596 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, 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, 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] [2020-08-22 02:10:17,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:10:17,596 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:10:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:10:17,597 INFO L82 PathProgramCache]: Analyzing trace with hash -835338370, now seen corresponding path program 1 times [2020-08-22 02:10:17,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:10:17,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900017624] [2020-08-22 02:10:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:10:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,891 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:10:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:10:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:10:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:10:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:10:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:10:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:10:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:10:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:10:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:10:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:10:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:10:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:10:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:10:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:10:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:10:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:10:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:10:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 02:10:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:10:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:10:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:10:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:10:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 02:10:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 02:10:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:10:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 02:10:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:10:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:10:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:10:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:10:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-22 02:10:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 02:10:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:10:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-08-22 02:10:18,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900017624] [2020-08-22 02:10:18,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:10:18,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:10:18,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78605900] [2020-08-22 02:10:18,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:10:18,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:10:18,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:10:18,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:10:18,417 INFO L87 Difference]: Start difference. First operand 2622 states and 3181 transitions. Second operand 16 states. [2020-08-22 02:10:19,179 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:10:19,513 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:19,778 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:20,062 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:10:20,735 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:21,907 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:22,162 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:22,569 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:10:23,115 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:23,970 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:24,212 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:10:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:10:25,112 INFO L93 Difference]: Finished difference Result 5029 states and 6185 transitions. [2020-08-22 02:10:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 02:10:25,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-08-22 02:10:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:10:25,134 INFO L225 Difference]: With dead ends: 5029 [2020-08-22 02:10:25,134 INFO L226 Difference]: Without dead ends: 2630 [2020-08-22 02:10:25,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 02:10:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-08-22 02:10:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2557. [2020-08-22 02:10:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2557 states. [2020-08-22 02:10:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3076 transitions. [2020-08-22 02:10:25,708 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3076 transitions. Word has length 313 [2020-08-22 02:10:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:10:25,712 INFO L479 AbstractCegarLoop]: Abstraction has 2557 states and 3076 transitions. [2020-08-22 02:10:25,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:10:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3076 transitions. [2020-08-22 02:10:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-08-22 02:10:25,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:10:25,731 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, 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, 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] [2020-08-22 02:10:25,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:10:25,732 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:10:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:10:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash -646538018, now seen corresponding path program 1 times [2020-08-22 02:10:25,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:10:25,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899893064] [2020-08-22 02:10:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:10:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat