/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:20:27,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:20:27,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:20:27,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:20:27,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:20:27,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:20:27,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:20:27,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:20:27,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:20:27,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:20:27,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:20:27,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:20:27,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:20:27,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:20:27,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:20:27,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:20:27,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:20:27,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:20:27,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:20:27,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:20:27,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:20:27,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:20:27,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:20:27,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:20:27,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:20:27,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:20:27,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:20:27,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:20:27,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:20:27,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:20:27,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:20:27,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:20:27,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:20:27,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:20:27,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:20:27,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:20:27,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:20:27,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:20:27,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:20:27,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:20:27,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:20:27,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:20:27,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:20:27,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:20:27,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:20:27,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:20:27,805 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:20:27,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:20:27,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:20:27,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:20:27,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:20:27,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:20:27,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:20:27,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:20:27,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:20:27,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:20:27,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:20:27,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:20:27,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:20:27,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:20:27,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:20:27,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:20:27,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:20:27,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:20:27,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:20:27,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:20:27,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:20:27,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:20:27,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:20:27,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:20:27,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:20:27,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:20:28,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:20:28,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:20:28,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:20:28,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:20:28,154 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:20:28,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-22 05:20:28,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29c8259de/dee40f86df1a4a15b1f90108d4efd2bb/FLAG2c0f95007 [2020-08-22 05:20:28,746 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:20:28,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-22 05:20:28,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29c8259de/dee40f86df1a4a15b1f90108d4efd2bb/FLAG2c0f95007 [2020-08-22 05:20:29,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29c8259de/dee40f86df1a4a15b1f90108d4efd2bb [2020-08-22 05:20:29,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:20:29,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:20:29,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:20:29,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:20:29,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:20:29,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12af90c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29, skipping insertion in model container [2020-08-22 05:20:29,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:20:29,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:20:29,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:20:29,590 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:20:29,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:20:29,736 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:20:29,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29 WrapperNode [2020-08-22 05:20:29,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:20:29,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:20:29,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:20:29,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:20:29,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (1/1) ... [2020-08-22 05:20:29,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:20:29,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:20:29,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:20:29,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:20:29,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:20:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:20:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:20:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:20:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 05:20:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:20:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:20:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:20:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:20:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:20:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:20:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:20:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:20:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:20:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:20:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:20:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:20:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:20:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:20:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:20:29,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:20:29,908 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:20:29,908 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:20:29,908 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:20:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:20:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 05:20:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:20:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:20:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:20:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:20:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:20:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:20:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:20:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:20:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:20:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:20:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:20:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:20:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:20:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:20:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:20:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:20:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:20:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:20:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:20:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:20:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:20:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:20:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:20:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:20:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:20:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:20:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:20:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:20:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:20:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:20:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:20:31,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:20:31,038 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:20:31,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:20:31 BoogieIcfgContainer [2020-08-22 05:20:31,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:20:31,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:20:31,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:20:31,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:20:31,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:20:29" (1/3) ... [2020-08-22 05:20:31,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561e938e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:20:31, skipping insertion in model container [2020-08-22 05:20:31,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:29" (2/3) ... [2020-08-22 05:20:31,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561e938e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:20:31, skipping insertion in model container [2020-08-22 05:20:31,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:20:31" (3/3) ... [2020-08-22 05:20:31,053 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-08-22 05:20:31,064 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:20:31,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:20:31,087 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:20:31,113 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:20:31,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:20:31,114 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:20:31,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:20:31,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:20:31,115 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:20:31,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:20:31,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:20:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-22 05:20:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:20:31,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:31,150 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] [2020-08-22 05:20:31,150 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:31,157 INFO L82 PathProgramCache]: Analyzing trace with hash 104665002, now seen corresponding path program 1 times [2020-08-22 05:20:31,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:31,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295290469] [2020-08-22 05:20:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:31,815 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:31,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:31,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:31,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:20:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:20:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:31,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295290469] [2020-08-22 05:20:31,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:31,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:20:31,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751751175] [2020-08-22 05:20:31,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:20:31,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:31,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:20:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:20:31,995 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-22 05:20:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:33,093 INFO L93 Difference]: Finished difference Result 301 states and 388 transitions. [2020-08-22 05:20:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:20:33,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:20:33,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:33,111 INFO L225 Difference]: With dead ends: 301 [2020-08-22 05:20:33,111 INFO L226 Difference]: Without dead ends: 163 [2020-08-22 05:20:33,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:20:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-22 05:20:33,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-22 05:20:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 05:20:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-22 05:20:33,216 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 46 [2020-08-22 05:20:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:33,216 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-22 05:20:33,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:20:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-22 05:20:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:20:33,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:33,220 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] [2020-08-22 05:20:33,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:20:33,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:33,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:33,222 INFO L82 PathProgramCache]: Analyzing trace with hash 149584290, now seen corresponding path program 1 times [2020-08-22 05:20:33,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:33,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498825796] [2020-08-22 05:20:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:33,520 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:33,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:33,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:33,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:20:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:33,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498825796] [2020-08-22 05:20:33,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:33,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:20:33,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793404482] [2020-08-22 05:20:33,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:20:33,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:20:33,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:20:33,627 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 4 states. [2020-08-22 05:20:34,026 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:34,766 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2020-08-22 05:20:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:20:34,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:20:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:34,776 INFO L225 Difference]: With dead ends: 225 [2020-08-22 05:20:34,777 INFO L226 Difference]: Without dead ends: 147 [2020-08-22 05:20:34,778 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 [2020-08-22 05:20:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-22 05:20:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-22 05:20:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 05:20:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2020-08-22 05:20:34,831 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 47 [2020-08-22 05:20:34,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:34,831 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2020-08-22 05:20:34,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:20:34,832 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2020-08-22 05:20:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 05:20:34,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:34,841 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] [2020-08-22 05:20:34,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:20:34,842 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:34,842 INFO L82 PathProgramCache]: Analyzing trace with hash 964261252, now seen corresponding path program 1 times [2020-08-22 05:20:34,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:34,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67998858] [2020-08-22 05:20:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,202 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:35,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:20:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:35,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67998858] [2020-08-22 05:20:35,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:35,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:20:35,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941510706] [2020-08-22 05:20:35,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:20:35,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:20:35,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:20:35,304 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand 8 states. [2020-08-22 05:20:35,644 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:35,944 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:36,203 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:36,448 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:37,199 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:38,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:38,803 INFO L93 Difference]: Finished difference Result 412 states and 501 transitions. [2020-08-22 05:20:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:20:38,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 05:20:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:38,808 INFO L225 Difference]: With dead ends: 412 [2020-08-22 05:20:38,808 INFO L226 Difference]: Without dead ends: 316 [2020-08-22 05:20:38,810 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 [2020-08-22 05:20:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-22 05:20:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 246. [2020-08-22 05:20:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-22 05:20:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 290 transitions. [2020-08-22 05:20:38,882 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 290 transitions. Word has length 51 [2020-08-22 05:20:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:38,883 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 290 transitions. [2020-08-22 05:20:38,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:20:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 290 transitions. [2020-08-22 05:20:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:20:38,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:38,884 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] [2020-08-22 05:20:38,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:20:38,885 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:38,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1270230841, now seen corresponding path program 1 times [2020-08-22 05:20:38,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:38,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843295028] [2020-08-22 05:20:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,231 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:39,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:20:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:20:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:39,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843295028] [2020-08-22 05:20:39,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:39,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:20:39,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61585335] [2020-08-22 05:20:39,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:39,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:39,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:39,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:39,355 INFO L87 Difference]: Start difference. First operand 246 states and 290 transitions. Second operand 12 states. [2020-08-22 05:20:39,773 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:40,064 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:40,300 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:40,547 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:41,096 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:41,917 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:42,290 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:42,585 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:42,857 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:43,082 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:43,438 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:43,698 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:43,936 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:45,685 INFO L93 Difference]: Finished difference Result 993 states and 1338 transitions. [2020-08-22 05:20:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:20:45,687 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 05:20:45,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:45,696 INFO L225 Difference]: With dead ends: 993 [2020-08-22 05:20:45,697 INFO L226 Difference]: Without dead ends: 771 [2020-08-22 05:20:45,699 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 [2020-08-22 05:20:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-08-22 05:20:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 678. [2020-08-22 05:20:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-22 05:20:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 836 transitions. [2020-08-22 05:20:45,849 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 836 transitions. Word has length 57 [2020-08-22 05:20:45,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:45,850 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 836 transitions. [2020-08-22 05:20:45,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:20:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 836 transitions. [2020-08-22 05:20:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:20:45,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:45,853 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] [2020-08-22 05:20:45,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:20:45,854 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1043234783, now seen corresponding path program 1 times [2020-08-22 05:20:45,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:45,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373179426] [2020-08-22 05:20:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,142 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:20:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:20:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:20:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:46,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373179426] [2020-08-22 05:20:46,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:46,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:20:46,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871255105] [2020-08-22 05:20:46,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:20:46,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:46,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:20:46,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:20:46,246 INFO L87 Difference]: Start difference. First operand 678 states and 836 transitions. Second operand 6 states. [2020-08-22 05:20:46,535 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:48,167 INFO L93 Difference]: Finished difference Result 1641 states and 2151 transitions. [2020-08-22 05:20:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:20:48,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 05:20:48,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:48,181 INFO L225 Difference]: With dead ends: 1641 [2020-08-22 05:20:48,181 INFO L226 Difference]: Without dead ends: 987 [2020-08-22 05:20:48,185 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 [2020-08-22 05:20:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-22 05:20:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 924. [2020-08-22 05:20:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-08-22 05:20:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1148 transitions. [2020-08-22 05:20:48,467 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1148 transitions. Word has length 61 [2020-08-22 05:20:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:48,467 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1148 transitions. [2020-08-22 05:20:48,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:20:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1148 transitions. [2020-08-22 05:20:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 05:20:48,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:48,471 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] [2020-08-22 05:20:48,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:20:48,471 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:48,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1818048574, now seen corresponding path program 1 times [2020-08-22 05:20:48,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:48,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964126085] [2020-08-22 05:20:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,829 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:20:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 05:20:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 05:20:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 05:20:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 05:20:49,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964126085] [2020-08-22 05:20:49,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:49,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:20:49,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679337299] [2020-08-22 05:20:49,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:20:49,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:20:49,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:20:49,009 INFO L87 Difference]: Start difference. First operand 924 states and 1148 transitions. Second operand 10 states. [2020-08-22 05:20:49,979 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 05:20:50,521 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:52,389 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:53,871 INFO L93 Difference]: Finished difference Result 1747 states and 2251 transitions. [2020-08-22 05:20:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:20:53,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 05:20:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:53,881 INFO L225 Difference]: With dead ends: 1747 [2020-08-22 05:20:53,881 INFO L226 Difference]: Without dead ends: 1110 [2020-08-22 05:20:53,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 05:20:53,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-08-22 05:20:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1031. [2020-08-22 05:20:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-08-22 05:20:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1260 transitions. [2020-08-22 05:20:54,105 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1260 transitions. Word has length 88 [2020-08-22 05:20:54,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:54,107 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1260 transitions. [2020-08-22 05:20:54,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:20:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1260 transitions. [2020-08-22 05:20:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-22 05:20:54,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:54,121 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] [2020-08-22 05:20:54,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:20:54,122 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1842113163, now seen corresponding path program 1 times [2020-08-22 05:20:54,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:54,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615290845] [2020-08-22 05:20:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,393 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:54,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:20:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:20:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 05:20:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 05:20:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 05:20:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:20:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:20:54,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615290845] [2020-08-22 05:20:54,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:54,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:20:54,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240339715] [2020-08-22 05:20:54,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:20:54,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:20:54,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:20:54,616 INFO L87 Difference]: Start difference. First operand 1031 states and 1260 transitions. Second operand 10 states. [2020-08-22 05:20:55,559 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:55,826 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:20:56,084 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:56,332 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:57,444 INFO L93 Difference]: Finished difference Result 2179 states and 2840 transitions. [2020-08-22 05:20:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:20:57,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-08-22 05:20:57,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:57,454 INFO L225 Difference]: With dead ends: 2179 [2020-08-22 05:20:57,454 INFO L226 Difference]: Without dead ends: 1172 [2020-08-22 05:20:57,459 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 [2020-08-22 05:20:57,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-22 05:20:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1061. [2020-08-22 05:20:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-08-22 05:20:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1294 transitions. [2020-08-22 05:20:57,679 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1294 transitions. Word has length 124 [2020-08-22 05:20:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:57,679 INFO L479 AbstractCegarLoop]: Abstraction has 1061 states and 1294 transitions. [2020-08-22 05:20:57,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:20:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1294 transitions. [2020-08-22 05:20:57,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 05:20:57,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:57,683 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] [2020-08-22 05:20:57,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:20:57,683 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:57,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:57,684 INFO L82 PathProgramCache]: Analyzing trace with hash -721880881, now seen corresponding path program 1 times [2020-08-22 05:20:57,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:57,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695001474] [2020-08-22 05:20:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:57,962 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:57,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:57,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:57,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:57,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:20:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:20:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:20:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 05:20:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 05:20:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 05:20:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 05:20:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:20:58,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695001474] [2020-08-22 05:20:58,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:58,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:20:58,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327360955] [2020-08-22 05:20:58,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:58,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:58,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:58,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:58,140 INFO L87 Difference]: Start difference. First operand 1061 states and 1294 transitions. Second operand 12 states. [2020-08-22 05:20:58,863 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:59,105 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:59,369 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:59,950 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:00,196 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:00,456 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:01,503 INFO L93 Difference]: Finished difference Result 1923 states and 2415 transitions. [2020-08-22 05:21:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:21:01,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-22 05:21:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:01,510 INFO L225 Difference]: With dead ends: 1923 [2020-08-22 05:21:01,511 INFO L226 Difference]: Without dead ends: 886 [2020-08-22 05:21:01,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:21:01,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-08-22 05:21:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 836. [2020-08-22 05:21:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 05:21:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1009 transitions. [2020-08-22 05:21:01,703 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1009 transitions. Word has length 128 [2020-08-22 05:21:01,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:01,703 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1009 transitions. [2020-08-22 05:21:01,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:01,703 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1009 transitions. [2020-08-22 05:21:01,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 05:21:01,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:01,706 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] [2020-08-22 05:21:01,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:21:01,707 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:01,707 INFO L82 PathProgramCache]: Analyzing trace with hash 315789474, now seen corresponding path program 1 times [2020-08-22 05:21:01,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:01,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410011848] [2020-08-22 05:21:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,037 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:02,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:21:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:21:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 05:21:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 05:21:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 05:21:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 05:21:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:21:02,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410011848] [2020-08-22 05:21:02,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:02,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:21:02,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834244751] [2020-08-22 05:21:02,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:02,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:02,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:02,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:02,319 INFO L87 Difference]: Start difference. First operand 836 states and 1009 transitions. Second operand 12 states. [2020-08-22 05:21:02,952 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:03,686 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:04,213 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:04,526 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:04,781 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:05,056 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:05,371 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:05,627 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:07,060 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:07,913 INFO L93 Difference]: Finished difference Result 1991 states and 2602 transitions. [2020-08-22 05:21:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 05:21:07,914 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-22 05:21:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:07,923 INFO L225 Difference]: With dead ends: 1991 [2020-08-22 05:21:07,924 INFO L226 Difference]: Without dead ends: 1324 [2020-08-22 05:21:07,927 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 [2020-08-22 05:21:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-08-22 05:21:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1102. [2020-08-22 05:21:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-22 05:21:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1352 transitions. [2020-08-22 05:21:08,180 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1352 transitions. Word has length 128 [2020-08-22 05:21:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:08,180 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1352 transitions. [2020-08-22 05:21:08,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1352 transitions. [2020-08-22 05:21:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 05:21:08,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:08,187 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] [2020-08-22 05:21:08,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:21:08,188 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:08,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1874994186, now seen corresponding path program 2 times [2020-08-22 05:21:08,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:08,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055743483] [2020-08-22 05:21:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:21:08,287 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:21:08,288 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:21:08,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:21:08,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:21:08 BoogieIcfgContainer [2020-08-22 05:21:08,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:21:08,349 INFO L168 Benchmark]: Toolchain (without parser) took 39321.77 ms. Allocated memory was 137.9 MB in the beginning and 768.1 MB in the end (delta: 630.2 MB). Free memory was 99.7 MB in the beginning and 337.1 MB in the end (delta: -237.4 MB). Peak memory consumption was 392.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:08,353 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:21:08,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.08 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 166.7 MB in the end (delta: -67.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:08,358 INFO L168 Benchmark]: Boogie Preprocessor took 86.76 ms. Allocated memory is still 200.8 MB. Free memory was 166.7 MB in the beginning and 162.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:08,359 INFO L168 Benchmark]: RCFGBuilder took 1219.47 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 162.4 MB in the beginning and 192.8 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:08,360 INFO L168 Benchmark]: TraceAbstraction took 37299.48 ms. Allocated memory was 230.7 MB in the beginning and 768.1 MB in the end (delta: 537.4 MB). Free memory was 192.8 MB in the beginning and 337.1 MB in the end (delta: -144.3 MB). Peak memory consumption was 393.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:08,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.08 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 166.7 MB in the end (delta: -67.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.76 ms. Allocated memory is still 200.8 MB. Free memory was 166.7 MB in the beginning and 162.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1219.47 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 162.4 MB in the beginning and 192.8 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37299.48 ms. Allocated memory was 230.7 MB in the beginning and 768.1 MB in the end (delta: 537.4 MB). Free memory was 192.8 MB in the beginning and 337.1 MB in the end (delta: -144.3 MB). Peak memory consumption was 393.1 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: 37.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 30.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1121 SDtfs, 2507 SDslu, 1336 SDs, 0 SdLazy, 7050 SolverSat, 1674 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 250 SyntacticMatches, 6 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 12.9s 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: 1.5s 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...