/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:54:25,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:54:25,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:54:25,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:54:25,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:54:25,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:54:25,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:54:25,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:54:25,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:54:25,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:54:25,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:54:25,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:54:25,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:54:25,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:54:25,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:54:25,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:54:25,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:54:25,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:54:25,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:54:25,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:54:25,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:54:25,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:54:25,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:54:25,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:54:25,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:54:25,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:54:25,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:54:25,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:54:25,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:54:25,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:54:25,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:54:25,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:54:25,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:54:25,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:54:25,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:54:25,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:54:25,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:54:25,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:54:25,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:54:25,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:54:25,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:54:25,875 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 [2020-08-18 11:54:25,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:54:25,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:54:25,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:54:25,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:54:25,899 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:54:25,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:54:25,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:54:25,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:54:25,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:54:25,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:54:25,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:54:25,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:54:25,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:54:25,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:54:25,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:54:25,901 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:54:25,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:54:25,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:54:25,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:54:25,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:54:25,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:54:25,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:54:25,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:54:25,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:54:25,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:54:25,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:54:25,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:54:25,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:54:25,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:54:25,904 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=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:54:26,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:54:26,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:54:26,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:54:26,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:54:26,225 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:54:26,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-08-18 11:54:26,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817097369/59fa476a33864d72955bc52e34b16b96/FLAG00075b8b3 [2020-08-18 11:54:26,837 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:54:26,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-08-18 11:54:26,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817097369/59fa476a33864d72955bc52e34b16b96/FLAG00075b8b3 [2020-08-18 11:54:27,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817097369/59fa476a33864d72955bc52e34b16b96 [2020-08-18 11:54:27,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:54:27,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:54:27,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:27,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:54:27,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:54:27,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be97408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27, skipping insertion in model container [2020-08-18 11:54:27,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:54:27,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:54:27,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:27,677 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:54:27,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:27,788 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:54:27,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27 WrapperNode [2020-08-18 11:54:27,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:27,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:54:27,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:54:27,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:54:27,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (1/1) ... [2020-08-18 11:54:27,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:54:27,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:54:27,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:54:27,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:54:27,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (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 [2020-08-18 11:54:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:54:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:54:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:54:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:54:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:54:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:54:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:54:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:54:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:54:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:54:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:54:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:54:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:54:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:54:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:54:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:54:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 11:54:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:54:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:54:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:54:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:54:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:54:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:54:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:54:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:54:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:54:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:54:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:54:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:54:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:54:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:54:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:54:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:54:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:54:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:54:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:54:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:54:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:54:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:54:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:54:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:54:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:54:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:54:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:54:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:54:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:54:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:54:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:54:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:54:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:54:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:54:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:54:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:54:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:54:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:54:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:54:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:54:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:54:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:54:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:54:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:54:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:54:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:54:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:54:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:54:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:54:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:54:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:54:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 11:54:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:54:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:54:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:54:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:54:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:54:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:54:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:54:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:54:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:54:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:54:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:54:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:54:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:54:29,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:54:29,087 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:54:29,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:29 BoogieIcfgContainer [2020-08-18 11:54:29,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:54:29,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:54:29,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:54:29,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:54:29,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:54:27" (1/3) ... [2020-08-18 11:54:29,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19422351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:29, skipping insertion in model container [2020-08-18 11:54:29,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:27" (2/3) ... [2020-08-18 11:54:29,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19422351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:29, skipping insertion in model container [2020-08-18 11:54:29,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:29" (3/3) ... [2020-08-18 11:54:29,102 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2020-08-18 11:54:29,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:54:29,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:54:29,136 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:54:29,161 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:54:29,161 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:54:29,161 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:54:29,162 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:54:29,162 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:54:29,162 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:54:29,162 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:54:29,162 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:54:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-08-18 11:54:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 11:54:29,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:29,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:29,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:29,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1542772809, now seen corresponding path program 1 times [2020-08-18 11:54:29,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:29,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384628487] [2020-08-18 11:54:29,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,869 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:29,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:54:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:29,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384628487] [2020-08-18 11:54:29,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:29,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:54:29,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730215546] [2020-08-18 11:54:29,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:54:30,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:30,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:54:30,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:30,018 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-08-18 11:54:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:31,070 INFO L93 Difference]: Finished difference Result 284 states and 371 transitions. [2020-08-18 11:54:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:54:31,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 11:54:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:31,088 INFO L225 Difference]: With dead ends: 284 [2020-08-18 11:54:31,088 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 11:54:31,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 11:54:31,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 121. [2020-08-18 11:54:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 11:54:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2020-08-18 11:54:31,188 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 46 [2020-08-18 11:54:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:31,188 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2020-08-18 11:54:31,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:54:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2020-08-18 11:54:31,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 11:54:31,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:31,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:31,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:54:31,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:31,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:31,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1355296267, now seen corresponding path program 1 times [2020-08-18 11:54:31,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:31,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134975683] [2020-08-18 11:54:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,534 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:54:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:31,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134975683] [2020-08-18 11:54:31,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:31,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:54:31,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108951000] [2020-08-18 11:54:31,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:54:31,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:31,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:54:31,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:54:31,578 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 4 states. [2020-08-18 11:54:31,950 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:32,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:32,705 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2020-08-18 11:54:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:54:32,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 11:54:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:32,710 INFO L225 Difference]: With dead ends: 213 [2020-08-18 11:54:32,710 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 11:54:32,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:54:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 11:54:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-08-18 11:54:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-18 11:54:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2020-08-18 11:54:32,752 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 47 [2020-08-18 11:54:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:32,753 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2020-08-18 11:54:32,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:54:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2020-08-18 11:54:32,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:54:32,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:32,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:32,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:54:32,756 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:32,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:32,756 INFO L82 PathProgramCache]: Analyzing trace with hash 604849678, now seen corresponding path program 1 times [2020-08-18 11:54:32,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:32,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097461344] [2020-08-18 11:54:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,116 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:54:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:33,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097461344] [2020-08-18 11:54:33,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:33,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:33,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352366153] [2020-08-18 11:54:33,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:33,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:33,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:33,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:33,195 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 8 states. [2020-08-18 11:54:33,519 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:33,855 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:34,133 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:34,368 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:35,382 INFO L93 Difference]: Finished difference Result 226 states and 276 transitions. [2020-08-18 11:54:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:54:35,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 11:54:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:35,386 INFO L225 Difference]: With dead ends: 226 [2020-08-18 11:54:35,386 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 11:54:35,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:54:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 11:54:35,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-08-18 11:54:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-18 11:54:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-08-18 11:54:35,419 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 52 [2020-08-18 11:54:35,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:35,419 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-08-18 11:54:35,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-08-18 11:54:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 11:54:35,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:35,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:35,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:54:35,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2012335283, now seen corresponding path program 1 times [2020-08-18 11:54:35,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:35,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368716765] [2020-08-18 11:54:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,689 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:54:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 11:54:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 11:54:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:35,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368716765] [2020-08-18 11:54:35,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:35,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:54:35,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608332057] [2020-08-18 11:54:35,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:54:35,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:54:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:54:35,792 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 6 states. [2020-08-18 11:54:36,084 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:37,142 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:37,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:37,715 INFO L93 Difference]: Finished difference Result 314 states and 386 transitions. [2020-08-18 11:54:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 11:54:37,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 11:54:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:37,720 INFO L225 Difference]: With dead ends: 314 [2020-08-18 11:54:37,720 INFO L226 Difference]: Without dead ends: 226 [2020-08-18 11:54:37,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:54:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-08-18 11:54:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 183. [2020-08-18 11:54:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-08-18 11:54:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 209 transitions. [2020-08-18 11:54:37,767 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 209 transitions. Word has length 60 [2020-08-18 11:54:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:37,767 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 209 transitions. [2020-08-18 11:54:37,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:54:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 209 transitions. [2020-08-18 11:54:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 11:54:37,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:37,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:37,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:54:37,770 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:37,771 INFO L82 PathProgramCache]: Analyzing trace with hash 471487289, now seen corresponding path program 1 times [2020-08-18 11:54:37,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:37,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285537444] [2020-08-18 11:54:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,040 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:54:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 11:54:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 11:54:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:38,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285537444] [2020-08-18 11:54:38,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:38,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:38,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041374175] [2020-08-18 11:54:38,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:38,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:38,122 INFO L87 Difference]: Start difference. First operand 183 states and 209 transitions. Second operand 8 states. [2020-08-18 11:54:38,449 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:39,383 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:39,684 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:40,151 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:40,379 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:40,633 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:41,391 INFO L93 Difference]: Finished difference Result 547 states and 678 transitions. [2020-08-18 11:54:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:54:41,392 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-18 11:54:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:41,397 INFO L225 Difference]: With dead ends: 547 [2020-08-18 11:54:41,397 INFO L226 Difference]: Without dead ends: 388 [2020-08-18 11:54:41,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:54:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-08-18 11:54:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 321. [2020-08-18 11:54:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 11:54:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 368 transitions. [2020-08-18 11:54:41,477 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 368 transitions. Word has length 74 [2020-08-18 11:54:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:41,478 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 368 transitions. [2020-08-18 11:54:41,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 368 transitions. [2020-08-18 11:54:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 11:54:41,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:41,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:41,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:54:41,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash -968585995, now seen corresponding path program 1 times [2020-08-18 11:54:41,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:41,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064967531] [2020-08-18 11:54:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,806 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:54:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 11:54:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:54:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:41,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064967531] [2020-08-18 11:54:41,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:41,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:54:41,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910608282] [2020-08-18 11:54:41,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:54:41,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:41,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:54:41,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:54:41,927 INFO L87 Difference]: Start difference. First operand 321 states and 368 transitions. Second operand 9 states. [2020-08-18 11:54:42,255 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:43,305 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:43,569 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:44,470 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:44,732 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:44,968 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:45,197 INFO L93 Difference]: Finished difference Result 430 states and 544 transitions. [2020-08-18 11:54:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:54:45,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 11:54:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:45,203 INFO L225 Difference]: With dead ends: 430 [2020-08-18 11:54:45,203 INFO L226 Difference]: Without dead ends: 427 [2020-08-18 11:54:45,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:54:45,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-08-18 11:54:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 321. [2020-08-18 11:54:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 11:54:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 367 transitions. [2020-08-18 11:54:45,268 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 367 transitions. Word has length 78 [2020-08-18 11:54:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:45,269 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 367 transitions. [2020-08-18 11:54:45,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:54:45,269 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 367 transitions. [2020-08-18 11:54:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 11:54:45,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:45,272 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] [2020-08-18 11:54:45,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:54:45,272 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash 662445521, now seen corresponding path program 1 times [2020-08-18 11:54:45,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:45,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505902572] [2020-08-18 11:54:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,511 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:54:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 11:54:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 11:54:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:54:45,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505902572] [2020-08-18 11:54:45,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:45,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:54:45,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329265202] [2020-08-18 11:54:45,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:54:45,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:45,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:54:45,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:54:45,711 INFO L87 Difference]: Start difference. First operand 321 states and 367 transitions. Second operand 9 states. [2020-08-18 11:54:46,613 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:46,841 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:54:47,068 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:47,292 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:48,224 INFO L93 Difference]: Finished difference Result 732 states and 917 transitions. [2020-08-18 11:54:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:54:48,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 11:54:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:48,228 INFO L225 Difference]: With dead ends: 732 [2020-08-18 11:54:48,228 INFO L226 Difference]: Without dead ends: 435 [2020-08-18 11:54:48,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:54:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-18 11:54:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 331. [2020-08-18 11:54:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-18 11:54:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 377 transitions. [2020-08-18 11:54:48,293 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 377 transitions. Word has length 94 [2020-08-18 11:54:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:48,293 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 377 transitions. [2020-08-18 11:54:48,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:54:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 377 transitions. [2020-08-18 11:54:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 11:54:48,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:48,296 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] [2020-08-18 11:54:48,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:54:48,296 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:48,297 INFO L82 PathProgramCache]: Analyzing trace with hash -234947757, now seen corresponding path program 1 times [2020-08-18 11:54:48,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:48,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378915346] [2020-08-18 11:54:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,566 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:48,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:54:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 11:54:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 11:54:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:54:48,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378915346] [2020-08-18 11:54:48,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:48,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 11:54:48,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575627691] [2020-08-18 11:54:48,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:54:48,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:48,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:54:48,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:54:48,745 INFO L87 Difference]: Start difference. First operand 331 states and 377 transitions. Second operand 11 states. [2020-08-18 11:54:49,210 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:49,446 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:49,661 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:50,252 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:50,497 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:50,741 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:51,796 INFO L93 Difference]: Finished difference Result 752 states and 939 transitions. [2020-08-18 11:54:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:54:51,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-18 11:54:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:51,800 INFO L225 Difference]: With dead ends: 752 [2020-08-18 11:54:51,801 INFO L226 Difference]: Without dead ends: 445 [2020-08-18 11:54:51,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:54:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-18 11:54:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 339. [2020-08-18 11:54:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-08-18 11:54:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 385 transitions. [2020-08-18 11:54:51,866 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 385 transitions. Word has length 94 [2020-08-18 11:54:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:51,867 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 385 transitions. [2020-08-18 11:54:51,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:54:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 385 transitions. [2020-08-18 11:54:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 11:54:51,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:51,869 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] [2020-08-18 11:54:51,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:54:51,870 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1735991700, now seen corresponding path program 1 times [2020-08-18 11:54:51,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:51,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143084643] [2020-08-18 11:54:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,132 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:54:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 11:54:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 11:54:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:54:52,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143084643] [2020-08-18 11:54:52,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:52,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:54:52,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987547411] [2020-08-18 11:54:52,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:54:52,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:52,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:54:52,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:54:52,258 INFO L87 Difference]: Start difference. First operand 339 states and 385 transitions. Second operand 7 states. [2020-08-18 11:54:52,619 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:53,169 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:55,190 INFO L93 Difference]: Finished difference Result 1074 states and 1381 transitions. [2020-08-18 11:54:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:54:55,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-08-18 11:54:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:55,202 INFO L225 Difference]: With dead ends: 1074 [2020-08-18 11:54:55,202 INFO L226 Difference]: Without dead ends: 759 [2020-08-18 11:54:55,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:54:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-08-18 11:54:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 639. [2020-08-18 11:54:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-08-18 11:54:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 751 transitions. [2020-08-18 11:54:55,387 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 751 transitions. Word has length 94 [2020-08-18 11:54:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:55,390 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 751 transitions. [2020-08-18 11:54:55,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:54:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 751 transitions. [2020-08-18 11:54:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 11:54:55,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:55,401 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] [2020-08-18 11:54:55,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:54:55,402 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1966005102, now seen corresponding path program 1 times [2020-08-18 11:54:55,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:55,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026924654] [2020-08-18 11:54:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,702 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:54:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:54:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:54:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:56,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:56,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 11:54:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:56,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 11:54:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 11:54:56,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026924654] [2020-08-18 11:54:56,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:54:56,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 11:54:56,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433229276] [2020-08-18 11:54:56,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 11:54:56,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:56,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 11:54:56,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 11:54:56,098 INFO L87 Difference]: Start difference. First operand 639 states and 751 transitions. Second operand 17 states. [2020-08-18 11:54:56,740 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:57,056 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:54:57,312 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:54:57,556 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:54:58,220 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:59,227 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:54:59,561 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:54:59,851 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:00,120 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:00,487 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:00,782 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:01,374 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 11:55:01,933 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 11:55:03,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:03,688 INFO L93 Difference]: Finished difference Result 1339 states and 1649 transitions. [2020-08-18 11:55:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 11:55:03,689 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-08-18 11:55:03,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:03,694 INFO L225 Difference]: With dead ends: 1339 [2020-08-18 11:55:03,694 INFO L226 Difference]: Without dead ends: 724 [2020-08-18 11:55:03,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=315, Invalid=1245, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 11:55:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-08-18 11:55:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 607. [2020-08-18 11:55:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-18 11:55:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 700 transitions. [2020-08-18 11:55:03,819 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 700 transitions. Word has length 98 [2020-08-18 11:55:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:03,820 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 700 transitions. [2020-08-18 11:55:03,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 11:55:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 700 transitions. [2020-08-18 11:55:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 11:55:03,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:03,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:03,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:55:03,824 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:03,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:03,824 INFO L82 PathProgramCache]: Analyzing trace with hash 451842310, now seen corresponding path program 1 times [2020-08-18 11:55:03,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:03,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020960753] [2020-08-18 11:55:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:55:03,888 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:55:03,889 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:55:03,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:55:03,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:55:03 BoogieIcfgContainer [2020-08-18 11:55:03,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:55:03,925 INFO L168 Benchmark]: Toolchain (without parser) took 36816.55 ms. Allocated memory was 140.5 MB in the beginning and 656.4 MB in the end (delta: 515.9 MB). Free memory was 103.1 MB in the beginning and 279.6 MB in the end (delta: -176.5 MB). Peak memory consumption was 339.4 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:03,926 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 11:55:03,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.00 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.9 MB in the beginning and 173.6 MB in the end (delta: -70.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:03,927 INFO L168 Benchmark]: Boogie Preprocessor took 123.92 ms. Allocated memory is still 205.0 MB. Free memory was 173.6 MB in the beginning and 169.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:03,928 INFO L168 Benchmark]: RCFGBuilder took 1179.64 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 169.5 MB in the beginning and 200.0 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:03,928 INFO L168 Benchmark]: TraceAbstraction took 34828.63 ms. Allocated memory was 238.0 MB in the beginning and 656.4 MB in the end (delta: 418.4 MB). Free memory was 198.5 MB in the beginning and 279.6 MB in the end (delta: -81.0 MB). Peak memory consumption was 337.3 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:03,931 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.00 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.9 MB in the beginning and 173.6 MB in the end (delta: -70.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.92 ms. Allocated memory is still 205.0 MB. Free memory was 173.6 MB in the beginning and 169.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1179.64 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 169.5 MB in the beginning and 200.0 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34828.63 ms. Allocated memory was 238.0 MB in the beginning and 656.4 MB in the end (delta: 418.4 MB). Free memory was 198.5 MB in the beginning and 279.6 MB in the end (delta: -81.0 MB). Peak memory consumption was 337.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 764]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L581] int pumpRunning = 0; [L582] int systemActive = 1; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L824] int retValue_acc ; [L827] retValue_acc = 1 [L828] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L511] int splverifierCounter ; [L512] int tmp ; [L513] int tmp___0 ; [L514] int tmp___1 ; [L515] int tmp___2 ; [L518] splverifierCounter = 0 [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND TRUE \read(tmp) [L532] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L532] RET waterRise() [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp___0)) [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___2)) [L556] tmp___1 = __VERIFIER_nondet_int() [L558] COND TRUE \read(tmp___1) [L565] CALL timeShift() [L589] COND FALSE !(\read(pumpRunning)) [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND TRUE ! pumpRunning [L623] CALL, EXPR isHighWaterLevel() [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L739] CALL, EXPR isHighWaterSensorDry() [L493] int retValue_acc ; [L496] COND FALSE !(waterLevel < 2) [L500] retValue_acc = 0 [L501] return (retValue_acc); [L739] RET, EXPR isHighWaterSensorDry() [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); [L623] RET, EXPR isHighWaterLevel() [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L627] CALL activatePump() [L652] int tmp ; [L656] CALL, EXPR isMethaneAlarm() [L677] int retValue_acc ; [L681] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); [L656] RET, EXPR isMethaneAlarm() [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L662] CALL activatePump__wrappee__highWaterSensor() [L646] pumpRunning = 1 [L662] RET activatePump__wrappee__highWaterSensor() [L627] RET activatePump() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND FALSE !(\read(tmp)) [L604] RET __utac_acc__Specification1_spec__1() [L565] RET timeShift() [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND FALSE !(\read(tmp)) [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp___0) [L542] CALL changeMethaneLevel() [L443] COND FALSE !(\read(methaneLevelCritical)) [L446] methaneLevelCritical = 1 [L542] RET changeMethaneLevel() [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___2)) [L556] tmp___1 = __VERIFIER_nondet_int() [L558] COND TRUE \read(tmp___1) [L565] CALL timeShift() [L589] COND TRUE \read(pumpRunning) [L591] CALL lowerWaterLevel() [L419] COND TRUE waterLevel > 0 [L420] waterLevel = waterLevel - 1 [L591] RET lowerWaterLevel() [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND FALSE !(! pumpRunning) [L636] FCALL processEnvironment__wrappee__base() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND TRUE \read(tmp) [L779] CALL, EXPR isPumpRunning() [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); [L779] RET, EXPR isPumpRunning() [L779] tmp___0 = isPumpRunning() [L781] COND TRUE \read(tmp___0) [L783] CALL __automaton_fail() [L764] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1191 SDtfs, 2362 SDslu, 1386 SDs, 0 SdLazy, 6747 SolverSat, 1615 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 263 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 748 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 871 NumberOfCodeBlocks, 871 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 727 ConstructedInterpolants, 0 QuantifiedInterpolants, 233536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...