/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:20:52,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:20:52,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:20:52,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:20:52,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:20:52,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:20:52,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:20:52,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:20:52,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:20:52,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:20:52,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:20:52,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:20:52,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:20:52,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:20:52,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:20:52,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:20:52,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:20:52,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:20:52,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:20:52,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:20:52,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:20:52,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:20:52,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:20:52,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:20:52,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:20:52,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:20:52,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:20:52,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:20:52,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:20:52,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:20:52,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:20:52,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:20:52,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:20:52,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:20:52,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:20:52,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:20:52,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:20:52,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:20:52,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:20:52,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:20:52,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:20:52,835 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 15:20:52,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:20:52,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:20:52,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:20:52,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:20:52,860 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:20:52,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:20:52,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:20:52,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:20:52,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:20:52,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:20:52,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:20:52,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:20:52,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:20:52,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:20:52,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:20:52,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:20:52,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:20:52,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:20:52,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:20:52,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:20:52,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:20:52,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:20:52,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:20:52,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:20:52,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:20:52,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:20:52,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:20:52,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:20:52,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:20:52,864 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 -> false [2020-08-18 15:20:53,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:20:53,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:20:53,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:20:53,170 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:20:53,172 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:20:53,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-18 15:20:53,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee95abee/241d07c2cd684e7cbd0c33718eec9d80/FLAG301a2bfd9 [2020-08-18 15:20:53,762 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:20:53,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-18 15:20:53,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee95abee/241d07c2cd684e7cbd0c33718eec9d80/FLAG301a2bfd9 [2020-08-18 15:20:54,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee95abee/241d07c2cd684e7cbd0c33718eec9d80 [2020-08-18 15:20:54,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:20:54,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:20:54,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:20:54,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:20:54,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:20:54,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69410267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54, skipping insertion in model container [2020-08-18 15:20:54,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:20:54,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:20:54,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:20:54,607 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:20:54,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:20:54,713 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:20:54,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54 WrapperNode [2020-08-18 15:20:54,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:20:54,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:20:54,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:20:54,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:20:54,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (1/1) ... [2020-08-18 15:20:54,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:20:54,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:20:54,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:20:54,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:20:54,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (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 15:20:54,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:20:54,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:20:54,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:20:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:20:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:20:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:20:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:20:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 15:20:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:20:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:20:54,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:20:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:20:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:20:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:20:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 15:20:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:20:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:20:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:20:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:20:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:20:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:20:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:20:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:20:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:20:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:20:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:20:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:20:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:20:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:20:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:20:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:20:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:20:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:20:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:20:54,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:20:54,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:20:54,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:20:54,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:20:54,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 15:20:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:20:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:20:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:20:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:20:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:20:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 15:20:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:20:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:20:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:20:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:20:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:20:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:20:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:20:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:20:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:20:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:20:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:20:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 15:20:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:20:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:20:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:20:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 15:20:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:20:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:20:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:20:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:20:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:20:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:20:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:20:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:20:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:20:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:20:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:20:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:20:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:20:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:20:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:20:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:20:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:20:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:20:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:20:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:20:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:20:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:20:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:20:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:20:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:20:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:20:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:20:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:20:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:20:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:20:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:20:56,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:20:56,208 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:20:56,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:20:56 BoogieIcfgContainer [2020-08-18 15:20:56,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:20:56,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:20:56,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:20:56,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:20:56,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:20:54" (1/3) ... [2020-08-18 15:20:56,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f01cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:20:56, skipping insertion in model container [2020-08-18 15:20:56,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:20:54" (2/3) ... [2020-08-18 15:20:56,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f01cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:20:56, skipping insertion in model container [2020-08-18 15:20:56,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:20:56" (3/3) ... [2020-08-18 15:20:56,222 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-08-18 15:20:56,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:20:56,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:20:56,253 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:20:56,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:20:56,277 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:20:56,277 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:20:56,278 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:20:56,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:20:56,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:20:56,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:20:56,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:20:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-18 15:20:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 15:20:56,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:20:56,312 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 15:20:56,313 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:20:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:20:56,319 INFO L82 PathProgramCache]: Analyzing trace with hash 104665002, now seen corresponding path program 1 times [2020-08-18 15:20:56,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:20:56,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176600474] [2020-08-18 15:20:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:20:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:57,018 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:20:57,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:20:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:20:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:57,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:20:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:20:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:57,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:20:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:20:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:20:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:57,136 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 15:20:57,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176600474] [2020-08-18 15:20:57,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:20:57,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:20:57,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275921128] [2020-08-18 15:20:57,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:20:57,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:20:57,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:20:57,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:20:57,175 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-18 15:20:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:20:58,279 INFO L93 Difference]: Finished difference Result 301 states and 388 transitions. [2020-08-18 15:20:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:20:58,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 15:20:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:20:58,295 INFO L225 Difference]: With dead ends: 301 [2020-08-18 15:20:58,296 INFO L226 Difference]: Without dead ends: 163 [2020-08-18 15:20:58,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:20:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-18 15:20:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-18 15:20:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 15:20:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-18 15:20:58,389 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 46 [2020-08-18 15:20:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:20:58,389 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-18 15:20:58,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:20:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-18 15:20:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 15:20:58,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:20:58,393 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 15:20:58,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:20:58,396 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:20:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:20:58,396 INFO L82 PathProgramCache]: Analyzing trace with hash 149584290, now seen corresponding path program 1 times [2020-08-18 15:20:58,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:20:58,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118168106] [2020-08-18 15:20:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:20:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:58,785 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:20:58,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:20:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:20:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:58,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:20:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:58,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:20:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:58,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:20:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:58,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:20:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:20:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:20:58,863 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 15:20:58,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118168106] [2020-08-18 15:20:58,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:20:58,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:20:58,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111477190] [2020-08-18 15:20:58,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:20:58,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:20:58,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:20:58,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:20:58,870 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 4 states. [2020-08-18 15:20:59,324 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:00,091 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2020-08-18 15:21:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:21:00,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 15:21:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:00,099 INFO L225 Difference]: With dead ends: 225 [2020-08-18 15:21:00,100 INFO L226 Difference]: Without dead ends: 147 [2020-08-18 15:21:00,101 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 15:21:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-18 15:21:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-18 15:21:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 15:21:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2020-08-18 15:21:00,138 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 47 [2020-08-18 15:21:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:00,138 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2020-08-18 15:21:00,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:21:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2020-08-18 15:21:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:21:00,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:00,141 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] [2020-08-18 15:21:00,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:21:00,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash 964261252, now seen corresponding path program 1 times [2020-08-18 15:21:00,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:00,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439468900] [2020-08-18 15:21:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:00,479 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:00,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:21:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:21:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:00,590 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 15:21:00,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439468900] [2020-08-18 15:21:00,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:00,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:21:00,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853339022] [2020-08-18 15:21:00,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:21:00,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:00,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:21:00,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:21:00,593 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand 8 states. [2020-08-18 15:21:00,910 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:01,203 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:01,461 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:01,682 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:02,404 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:03,908 INFO L93 Difference]: Finished difference Result 412 states and 501 transitions. [2020-08-18 15:21:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:21:03,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 15:21:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:03,913 INFO L225 Difference]: With dead ends: 412 [2020-08-18 15:21:03,913 INFO L226 Difference]: Without dead ends: 316 [2020-08-18 15:21:03,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:21:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-18 15:21:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 246. [2020-08-18 15:21:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-18 15:21:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 290 transitions. [2020-08-18 15:21:03,977 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 290 transitions. Word has length 51 [2020-08-18 15:21:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:03,978 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 290 transitions. [2020-08-18 15:21:03,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:21:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 290 transitions. [2020-08-18 15:21:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 15:21:03,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:03,981 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] [2020-08-18 15:21:03,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:21:03,981 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:03,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1270230841, now seen corresponding path program 1 times [2020-08-18 15:21:03,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:03,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833789094] [2020-08-18 15:21:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,309 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:04,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:21:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:21:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:04,413 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 15:21:04,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833789094] [2020-08-18 15:21:04,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:04,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:21:04,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249422414] [2020-08-18 15:21:04,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:21:04,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:21:04,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:21:04,415 INFO L87 Difference]: Start difference. First operand 246 states and 290 transitions. Second operand 12 states. [2020-08-18 15:21:04,879 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:05,180 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:05,412 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:05,646 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:06,209 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:06,940 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:07,328 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:07,609 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:07,898 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:08,157 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:08,502 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:08,822 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:09,083 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:10,946 INFO L93 Difference]: Finished difference Result 993 states and 1338 transitions. [2020-08-18 15:21:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:21:10,947 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 15:21:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:10,956 INFO L225 Difference]: With dead ends: 993 [2020-08-18 15:21:10,956 INFO L226 Difference]: Without dead ends: 771 [2020-08-18 15:21:10,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 15:21:10,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-08-18 15:21:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 678. [2020-08-18 15:21:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 15:21:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 836 transitions. [2020-08-18 15:21:11,107 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 836 transitions. Word has length 57 [2020-08-18 15:21:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:11,108 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 836 transitions. [2020-08-18 15:21:11,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:21:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 836 transitions. [2020-08-18 15:21:11,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 15:21:11,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:11,112 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] [2020-08-18 15:21:11,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:21:11,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1043234783, now seen corresponding path program 1 times [2020-08-18 15:21:11,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:11,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018875635] [2020-08-18 15:21:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,371 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:21:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:21:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 15:21:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:11,451 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 15:21:11,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018875635] [2020-08-18 15:21:11,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:11,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:21:11,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826206255] [2020-08-18 15:21:11,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:21:11,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:11,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:21:11,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:21:11,454 INFO L87 Difference]: Start difference. First operand 678 states and 836 transitions. Second operand 6 states. [2020-08-18 15:21:11,810 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:13,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:13,474 INFO L93 Difference]: Finished difference Result 1641 states and 2151 transitions. [2020-08-18 15:21:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:21:13,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 15:21:13,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:13,483 INFO L225 Difference]: With dead ends: 1641 [2020-08-18 15:21:13,484 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 15:21:13,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:21:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 15:21:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 924. [2020-08-18 15:21:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-08-18 15:21:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1148 transitions. [2020-08-18 15:21:13,690 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1148 transitions. Word has length 61 [2020-08-18 15:21:13,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:13,690 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1148 transitions. [2020-08-18 15:21:13,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:21:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1148 transitions. [2020-08-18 15:21:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 15:21:13,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:13,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:13,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:21:13,695 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:13,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1818048574, now seen corresponding path program 1 times [2020-08-18 15:21:13,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:13,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480424846] [2020-08-18 15:21:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:13,985 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:21:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:21:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 15:21:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:21:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:21:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 15:21:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 15:21:14,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480424846] [2020-08-18 15:21:14,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:14,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:21:14,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401698530] [2020-08-18 15:21:14,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:21:14,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:14,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:21:14,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:21:14,165 INFO L87 Difference]: Start difference. First operand 924 states and 1148 transitions. Second operand 10 states. [2020-08-18 15:21:14,755 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 15:21:15,334 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:17,326 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:18,653 INFO L93 Difference]: Finished difference Result 1747 states and 2251 transitions. [2020-08-18 15:21:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 15:21:18,653 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 15:21:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:18,662 INFO L225 Difference]: With dead ends: 1747 [2020-08-18 15:21:18,662 INFO L226 Difference]: Without dead ends: 1110 [2020-08-18 15:21:18,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:21:18,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-08-18 15:21:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1031. [2020-08-18 15:21:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-08-18 15:21:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1260 transitions. [2020-08-18 15:21:18,939 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1260 transitions. Word has length 88 [2020-08-18 15:21:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:18,941 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1260 transitions. [2020-08-18 15:21:18,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:21:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1260 transitions. [2020-08-18 15:21:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 15:21:18,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:18,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:18,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:21:18,948 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:18,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1842113163, now seen corresponding path program 1 times [2020-08-18 15:21:18,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:18,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82105154] [2020-08-18 15:21:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,227 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:19,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:21:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:21:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:21:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 15:21:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 15:21:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 15:21:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 15:21:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 15:21:19,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82105154] [2020-08-18 15:21:19,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:19,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:21:19,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028994116] [2020-08-18 15:21:19,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:21:19,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:19,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:21:19,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:21:19,440 INFO L87 Difference]: Start difference. First operand 1031 states and 1260 transitions. Second operand 10 states. [2020-08-18 15:21:20,375 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:20,654 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:21:20,904 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:21,149 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:22,143 INFO L93 Difference]: Finished difference Result 2179 states and 2840 transitions. [2020-08-18 15:21:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:21:22,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-08-18 15:21:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:22,153 INFO L225 Difference]: With dead ends: 2179 [2020-08-18 15:21:22,153 INFO L226 Difference]: Without dead ends: 1172 [2020-08-18 15:21:22,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 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 15:21:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-18 15:21:22,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1061. [2020-08-18 15:21:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-08-18 15:21:22,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1294 transitions. [2020-08-18 15:21:22,367 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1294 transitions. Word has length 124 [2020-08-18 15:21:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:22,368 INFO L479 AbstractCegarLoop]: Abstraction has 1061 states and 1294 transitions. [2020-08-18 15:21:22,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:21:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1294 transitions. [2020-08-18 15:21:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 15:21:22,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:22,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:22,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:21:22,372 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:22,372 INFO L82 PathProgramCache]: Analyzing trace with hash -721880881, now seen corresponding path program 1 times [2020-08-18 15:21:22,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:22,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050389564] [2020-08-18 15:21:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,678 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:21:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:21:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:21:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:21:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 15:21:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 15:21:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 15:21:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 15:21:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 15:21:22,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050389564] [2020-08-18 15:21:22,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:22,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:21:22,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355135665] [2020-08-18 15:21:22,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:21:22,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:22,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:21:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:21:22,876 INFO L87 Difference]: Start difference. First operand 1061 states and 1294 transitions. Second operand 12 states. [2020-08-18 15:21:23,371 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:23,598 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:23,824 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:24,415 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:24,661 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:24,915 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:25,902 INFO L93 Difference]: Finished difference Result 1923 states and 2415 transitions. [2020-08-18 15:21:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:21:25,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 15:21:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:25,912 INFO L225 Difference]: With dead ends: 1923 [2020-08-18 15:21:25,912 INFO L226 Difference]: Without dead ends: 886 [2020-08-18 15:21:25,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:21:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-08-18 15:21:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 836. [2020-08-18 15:21:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-18 15:21:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1009 transitions. [2020-08-18 15:21:26,066 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1009 transitions. Word has length 128 [2020-08-18 15:21:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:26,066 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1009 transitions. [2020-08-18 15:21:26,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:21:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1009 transitions. [2020-08-18 15:21:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 15:21:26,069 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:26,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:26,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:21:26,070 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:26,071 INFO L82 PathProgramCache]: Analyzing trace with hash 315789474, now seen corresponding path program 1 times [2020-08-18 15:21:26,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:26,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999242581] [2020-08-18 15:21:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,430 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:21:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:21:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:21:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:21:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 15:21:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 15:21:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 15:21:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 15:21:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:21:26,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999242581] [2020-08-18 15:21:26,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:26,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:21:26,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474521189] [2020-08-18 15:21:26,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:21:26,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:26,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:21:26,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:21:26,634 INFO L87 Difference]: Start difference. First operand 836 states and 1009 transitions. Second operand 12 states. [2020-08-18 15:21:27,279 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:28,132 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:28,666 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:28,932 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:29,171 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:29,436 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:29,725 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:30,002 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:31,389 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:32,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:32,187 INFO L93 Difference]: Finished difference Result 1991 states and 2602 transitions. [2020-08-18 15:21:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 15:21:32,188 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 15:21:32,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:32,197 INFO L225 Difference]: With dead ends: 1991 [2020-08-18 15:21:32,197 INFO L226 Difference]: Without dead ends: 1324 [2020-08-18 15:21:32,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2020-08-18 15:21:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-08-18 15:21:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1102. [2020-08-18 15:21:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-18 15:21:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1352 transitions. [2020-08-18 15:21:32,504 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1352 transitions. Word has length 128 [2020-08-18 15:21:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:32,506 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1352 transitions. [2020-08-18 15:21:32,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:21:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1352 transitions. [2020-08-18 15:21:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-18 15:21:32,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:32,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 15:21:32,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:21:32,515 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:32,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:32,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1874994186, now seen corresponding path program 2 times [2020-08-18 15:21:32,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:32,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890510815] [2020-08-18 15:21:32,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:21:32,611 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:21:32,611 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:21:32,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:21:32,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:21:32 BoogieIcfgContainer [2020-08-18 15:21:32,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:21:32,680 INFO L168 Benchmark]: Toolchain (without parser) took 38603.70 ms. Allocated memory was 140.0 MB in the beginning and 738.7 MB in the end (delta: 598.7 MB). Free memory was 102.2 MB in the beginning and 532.9 MB in the end (delta: -430.7 MB). Peak memory consumption was 168.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:21:32,681 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 15:21:32,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.97 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 170.2 MB in the end (delta: -68.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:21:32,682 INFO L168 Benchmark]: Boogie Preprocessor took 92.38 ms. Allocated memory is still 202.4 MB. Free memory was 170.2 MB in the beginning and 166.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:21:32,685 INFO L168 Benchmark]: RCFGBuilder took 1407.12 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 166.1 MB in the beginning and 196.1 MB in the end (delta: -30.0 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:21:32,688 INFO L168 Benchmark]: TraceAbstraction took 36463.44 ms. Allocated memory was 235.4 MB in the beginning and 738.7 MB in the end (delta: 503.3 MB). Free memory was 196.1 MB in the beginning and 532.9 MB in the end (delta: -336.8 MB). Peak memory consumption was 166.5 MB. Max. memory is 7.1 GB. [2020-08-18 15:21:32,697 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.97 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 170.2 MB in the end (delta: -68.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.38 ms. Allocated memory is still 202.4 MB. Free memory was 170.2 MB in the beginning and 166.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1407.12 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 166.1 MB in the beginning and 196.1 MB in the end (delta: -30.0 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36463.44 ms. Allocated memory was 235.4 MB in the beginning and 738.7 MB in the end (delta: 503.3 MB). Free memory was 196.1 MB in the beginning and 532.9 MB in the end (delta: -336.8 MB). Peak memory consumption was 166.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 310]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L713] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L535] int retValue_acc ; [L538] retValue_acc = 1 [L539] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L433] COND TRUE waterLevel < 2 [L434] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND TRUE ! pumpRunning [L162] CALL, EXPR isHighWaterLevel() [L272] int retValue_acc ; [L273] int tmp ; [L274] int tmp___0 ; [L278] CALL, EXPR isHighWaterSensorDry() [L495] int retValue_acc ; [L498] COND FALSE !(waterLevel < 2) [L502] retValue_acc = 0 [L503] return (retValue_acc); [L278] RET, EXPR isHighWaterSensorDry() [L278] tmp = isHighWaterSensorDry() [L280] COND FALSE !(\read(tmp)) [L283] tmp___0 = 1 [L285] retValue_acc = tmp___0 [L286] return (retValue_acc); [L162] RET, EXPR isHighWaterLevel() [L162] tmp = isHighWaterLevel() [L164] COND TRUE \read(tmp) [L166] CALL activatePump() [L191] int tmp ; [L195] CALL, EXPR isMethaneAlarm() [L216] int retValue_acc ; [L220] CALL, EXPR isMethaneLevelCritical() [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L220] RET, EXPR isMethaneLevelCritical() [L220] retValue_acc = isMethaneLevelCritical() [L222] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) [L201] CALL activatePump__wrappee__highWaterSensor() [L185] pumpRunning = 1 [L201] RET activatePump__wrappee__highWaterSensor() [L166] RET activatePump() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND TRUE tmp == 0 [L920] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___0 = isPumpRunning() [L922] COND TRUE \read(tmp___0) [L924] CALL __automaton_fail() [L310] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1121 SDtfs, 2507 SDslu, 1336 SDs, 0 SdLazy, 7045 SolverSat, 1675 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 250 SyntacticMatches, 6 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred 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: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 749 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 893 NumberOfCodeBlocks, 893 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 721 ConstructedInterpolants, 0 QuantifiedInterpolants, 243690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 80/95 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...