/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:47:23,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:47:23,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:47:23,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:47:23,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:47:23,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:47:23,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:47:23,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:47:23,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:47:23,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:47:23,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:47:23,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:47:23,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:47:23,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:47:23,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:47:23,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:47:23,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:47:23,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:47:23,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:47:23,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:47:23,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:47:23,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:47:23,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:47:23,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:47:23,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:47:23,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:47:23,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:47:23,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:47:23,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:47:23,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:47:23,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:47:23,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:47:23,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:47:23,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:47:23,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:47:23,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:47:23,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:47:23,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:47:23,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:47:23,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:47:23,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:47:23,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:47:23,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:47:23,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:47:23,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:47:23,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:47:23,846 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:47:23,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:47:23,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:47:23,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:47:23,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:47:23,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:47:23,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:47:23,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:47:23,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:47:23,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:47:23,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:47:23,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:47:23,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:47:23,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:47:23,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:47:23,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:47:23,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:47:23,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:47:23,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:47:23,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:47:23,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:47:23,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:47:23,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:47:23,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:47:23,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:47:23,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:47:24,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:47:24,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:47:24,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:47:24,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:47:24,158 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:47:24,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-18 21:47:24,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2cb41e6e/ab1b078a35d04d9180d8f475a71ec183/FLAGdc7d57e1f [2020-08-18 21:47:24,813 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:47:24,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-18 21:47:24,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2cb41e6e/ab1b078a35d04d9180d8f475a71ec183/FLAGdc7d57e1f [2020-08-18 21:47:25,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2cb41e6e/ab1b078a35d04d9180d8f475a71ec183 [2020-08-18 21:47:25,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:47:25,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:47:25,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:47:25,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:47:25,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:47:25,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c53af82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25, skipping insertion in model container [2020-08-18 21:47:25,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:47:25,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:47:25,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:47:25,556 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:47:25,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:47:25,720 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:47:25,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25 WrapperNode [2020-08-18 21:47:25,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:47:25,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:47:25,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:47:25,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:47:25,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (1/1) ... [2020-08-18 21:47:25,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:47:25,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:47:25,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:47:25,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:47:25,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:47:25,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:47:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:47:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:47:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:47:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:47:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:47:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:47:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:47:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 21:47:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:47:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:47:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:47:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:47:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:47:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:47:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:47:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:47:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:47:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:47:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:47:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:47:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:47:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 21:47:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:47:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:47:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:47:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:47:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:47:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:47:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:47:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:47:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:47:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:47:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:47:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:47:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:47:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:47:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:47:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:47:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:47:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:47:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:47:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:47:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:47:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:47:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:47:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:47:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:47:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:47:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:47:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:47:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:47:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:47:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:47:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:47:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 21:47:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:47:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:47:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:47:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:47:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:47:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 21:47:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:47:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:47:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:47:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:47:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:47:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:47:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:47:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:47:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:47:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:47:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:47:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:47:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:47:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:47:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:47:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:47:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:47:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:47:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:47:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:47:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:47:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:47:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:47:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:47:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:47:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:47:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:47:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:47:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:47:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:47:26,905 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:47:26,905 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:47:26,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:47:26 BoogieIcfgContainer [2020-08-18 21:47:26,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:47:26,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:47:26,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:47:26,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:47:26,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:47:25" (1/3) ... [2020-08-18 21:47:26,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4c2037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:47:26, skipping insertion in model container [2020-08-18 21:47:26,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:25" (2/3) ... [2020-08-18 21:47:26,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4c2037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:47:26, skipping insertion in model container [2020-08-18 21:47:26,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:47:26" (3/3) ... [2020-08-18 21:47:26,919 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-08-18 21:47:26,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:47:26,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:47:26,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:47:26,979 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:47:26,979 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:47:26,979 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:47:26,980 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:47:26,980 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:47:26,980 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:47:26,980 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:47:26,980 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:47:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-18 21:47:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 21:47:27,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:27,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:27,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:27,023 INFO L82 PathProgramCache]: Analyzing trace with hash 261309835, now seen corresponding path program 1 times [2020-08-18 21:47:27,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:27,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814606298] [2020-08-18 21:47:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:27,725 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:27,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:27,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:47:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:47:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:27,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814606298] [2020-08-18 21:47:27,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:27,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:47:27,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793699246] [2020-08-18 21:47:27,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:47:27,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:27,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:47:27,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:47:27,900 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-18 21:47:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:29,109 INFO L93 Difference]: Finished difference Result 309 states and 402 transitions. [2020-08-18 21:47:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:47:29,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 21:47:29,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:29,126 INFO L225 Difference]: With dead ends: 309 [2020-08-18 21:47:29,127 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 21:47:29,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:47:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 21:47:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 133. [2020-08-18 21:47:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 21:47:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-18 21:47:29,229 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 46 [2020-08-18 21:47:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:29,230 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-18 21:47:29,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:47:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-18 21:47:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 21:47:29,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:29,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:29,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:47:29,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:29,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:29,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1021856254, now seen corresponding path program 1 times [2020-08-18 21:47:29,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:29,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862116261] [2020-08-18 21:47:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:29,656 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:29,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:29,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:29,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:29,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:47:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:47:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:29,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862116261] [2020-08-18 21:47:29,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:29,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:47:29,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493570758] [2020-08-18 21:47:29,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:47:29,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:29,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:47:29,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:47:29,702 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 4 states. [2020-08-18 21:47:30,097 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:30,982 INFO L93 Difference]: Finished difference Result 242 states and 293 transitions. [2020-08-18 21:47:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:47:30,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 21:47:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:30,988 INFO L225 Difference]: With dead ends: 242 [2020-08-18 21:47:30,988 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 21:47:30,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:47:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 21:47:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-18 21:47:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 21:47:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-18 21:47:31,055 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 47 [2020-08-18 21:47:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:31,055 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-18 21:47:31,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:47:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-18 21:47:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 21:47:31,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:31,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:31,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:47:31,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:31,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1136847733, now seen corresponding path program 1 times [2020-08-18 21:47:31,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:31,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486100902] [2020-08-18 21:47:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:31,363 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:31,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:31,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:47:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:47:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:31,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486100902] [2020-08-18 21:47:31,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:31,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:47:31,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230068738] [2020-08-18 21:47:31,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:47:31,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:31,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:47:31,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:47:31,473 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 8 states. [2020-08-18 21:47:31,812 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:32,140 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:32,393 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:32,640 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:33,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:33,864 INFO L93 Difference]: Finished difference Result 251 states and 307 transitions. [2020-08-18 21:47:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:47:33,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 21:47:33,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:33,867 INFO L225 Difference]: With dead ends: 251 [2020-08-18 21:47:33,867 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 21:47:33,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:47:33,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 21:47:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-18 21:47:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 21:47:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-18 21:47:33,906 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 51 [2020-08-18 21:47:33,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:33,906 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-18 21:47:33,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:47:33,907 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-18 21:47:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 21:47:33,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:33,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:33,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:47:33,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:33,910 INFO L82 PathProgramCache]: Analyzing trace with hash -629251764, now seen corresponding path program 1 times [2020-08-18 21:47:33,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:33,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401965147] [2020-08-18 21:47:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,223 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 21:47:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:47:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:47:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:34,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401965147] [2020-08-18 21:47:34,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:34,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:47:34,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339759278] [2020-08-18 21:47:34,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:47:34,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:47:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:47:34,329 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 6 states. [2020-08-18 21:47:34,689 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:35,914 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:36,529 INFO L93 Difference]: Finished difference Result 351 states and 430 transitions. [2020-08-18 21:47:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:47:36,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 21:47:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:36,533 INFO L225 Difference]: With dead ends: 351 [2020-08-18 21:47:36,533 INFO L226 Difference]: Without dead ends: 251 [2020-08-18 21:47:36,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:47:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-18 21:47:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2020-08-18 21:47:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-18 21:47:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2020-08-18 21:47:36,594 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 64 [2020-08-18 21:47:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:36,594 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2020-08-18 21:47:36,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:47:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2020-08-18 21:47:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 21:47:36,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:36,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:36,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:47:36,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:36,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:36,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1171048631, now seen corresponding path program 1 times [2020-08-18 21:47:36,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:36,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16995084] [2020-08-18 21:47:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:36,945 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:36,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:36,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 21:47:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:47:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:47:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 21:47:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:37,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16995084] [2020-08-18 21:47:37,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:37,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:47:37,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844355802] [2020-08-18 21:47:37,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:47:37,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:37,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:47:37,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:47:37,102 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand 12 states. [2020-08-18 21:47:37,457 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:37,765 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:38,035 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:38,295 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:38,809 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:39,696 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:40,034 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:47:40,279 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:47:40,514 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:47:40,813 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:47:41,104 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:47:42,404 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:42,770 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:43,455 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2020-08-18 21:47:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:47:43,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-18 21:47:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:43,461 INFO L225 Difference]: With dead ends: 739 [2020-08-18 21:47:43,461 INFO L226 Difference]: Without dead ends: 553 [2020-08-18 21:47:43,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 21:47:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-08-18 21:47:43,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 495. [2020-08-18 21:47:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-18 21:47:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 577 transitions. [2020-08-18 21:47:43,561 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 577 transitions. Word has length 78 [2020-08-18 21:47:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:43,562 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 577 transitions. [2020-08-18 21:47:43,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:47:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 577 transitions. [2020-08-18 21:47:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 21:47:43,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:43,567 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:43,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:47:43,568 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2053602902, now seen corresponding path program 1 times [2020-08-18 21:47:43,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:43,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967239339] [2020-08-18 21:47:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,836 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:47:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:47:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:43,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:47:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 21:47:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 21:47:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 21:47:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:47:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 21:47:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 21:47:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 21:47:44,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967239339] [2020-08-18 21:47:44,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:47:44,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 21:47:44,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917695189] [2020-08-18 21:47:44,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:47:44,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:44,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:47:44,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:47:44,083 INFO L87 Difference]: Start difference. First operand 495 states and 577 transitions. Second operand 11 states. [2020-08-18 21:47:44,663 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 21:47:45,199 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:46,903 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 21:47:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:48,376 INFO L93 Difference]: Finished difference Result 964 states and 1200 transitions. [2020-08-18 21:47:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:47:48,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-18 21:47:48,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:48,383 INFO L225 Difference]: With dead ends: 964 [2020-08-18 21:47:48,384 INFO L226 Difference]: Without dead ends: 610 [2020-08-18 21:47:48,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-18 21:47:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-18 21:47:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 571. [2020-08-18 21:47:48,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-18 21:47:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 684 transitions. [2020-08-18 21:47:48,500 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 684 transitions. Word has length 136 [2020-08-18 21:47:48,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:48,501 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 684 transitions. [2020-08-18 21:47:48,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:47:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 684 transitions. [2020-08-18 21:47:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 21:47:48,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:48,504 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, 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] [2020-08-18 21:47:48,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:47:48,504 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:48,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:48,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1503231471, now seen corresponding path program 1 times [2020-08-18 21:47:48,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:48,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236748297] [2020-08-18 21:47:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,735 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:47:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:47:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:47:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 21:47:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:47:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:47:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 21:47:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 21:47:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 21:47:48,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236748297] [2020-08-18 21:47:48,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:47:48,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:47:48,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710271522] [2020-08-18 21:47:48,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:47:48,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:48,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:47:48,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:47:48,951 INFO L87 Difference]: Start difference. First operand 571 states and 684 transitions. Second operand 10 states. [2020-08-18 21:47:49,908 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:50,147 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:47:50,408 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:50,628 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:51,680 INFO L93 Difference]: Finished difference Result 1175 states and 1478 transitions. [2020-08-18 21:47:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:47:51,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-18 21:47:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:51,685 INFO L225 Difference]: With dead ends: 1175 [2020-08-18 21:47:51,685 INFO L226 Difference]: Without dead ends: 628 [2020-08-18 21:47:51,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:47:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-08-18 21:47:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 586. [2020-08-18 21:47:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-08-18 21:47:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 701 transitions. [2020-08-18 21:47:51,815 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 701 transitions. Word has length 141 [2020-08-18 21:47:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:51,816 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 701 transitions. [2020-08-18 21:47:51,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:47:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 701 transitions. [2020-08-18 21:47:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 21:47:51,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:51,819 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, 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] [2020-08-18 21:47:51,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:47:51,819 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:51,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1474731181, now seen corresponding path program 1 times [2020-08-18 21:47:51,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:51,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532682376] [2020-08-18 21:47:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,183 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:47:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:47:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:47:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 21:47:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:47:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:47:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 21:47:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 21:47:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 21:47:52,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532682376] [2020-08-18 21:47:52,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:47:52,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 21:47:52,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264571405] [2020-08-18 21:47:52,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:47:52,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:52,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:47:52,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:47:52,441 INFO L87 Difference]: Start difference. First operand 586 states and 701 transitions. Second operand 12 states. [2020-08-18 21:47:52,922 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:53,155 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:53,388 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:53,912 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:54,154 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:54,402 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:55,345 INFO L93 Difference]: Finished difference Result 1061 states and 1310 transitions. [2020-08-18 21:47:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:47:55,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-18 21:47:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:55,351 INFO L225 Difference]: With dead ends: 1061 [2020-08-18 21:47:55,351 INFO L226 Difference]: Without dead ends: 499 [2020-08-18 21:47:55,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:47:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-08-18 21:47:55,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2020-08-18 21:47:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-08-18 21:47:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2020-08-18 21:47:55,468 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 141 [2020-08-18 21:47:55,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:55,468 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2020-08-18 21:47:55,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:47:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2020-08-18 21:47:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 21:47:55,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:55,474 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:55,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:47:55,474 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:55,475 INFO L82 PathProgramCache]: Analyzing trace with hash -339330766, now seen corresponding path program 1 times [2020-08-18 21:47:55,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:55,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903130859] [2020-08-18 21:47:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,806 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:47:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:47:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:47:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:47:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:47:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 21:47:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:47:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 21:47:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 21:47:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-18 21:47:56,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903130859] [2020-08-18 21:47:56,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:47:56,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:47:56,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803200192] [2020-08-18 21:47:56,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:47:56,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:47:56,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:47:56,089 INFO L87 Difference]: Start difference. First operand 475 states and 565 transitions. Second operand 15 states. [2020-08-18 21:47:56,870 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:57,527 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:58,420 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:58,710 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:58,962 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:59,221 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:47:59,570 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:47:59,816 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:00,340 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 21:48:00,849 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 21:48:01,771 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:02,015 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:02,295 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:02,526 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:03,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:03,248 INFO L93 Difference]: Finished difference Result 1250 states and 1546 transitions. [2020-08-18 21:48:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 21:48:03,249 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-18 21:48:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:03,255 INFO L225 Difference]: With dead ends: 1250 [2020-08-18 21:48:03,255 INFO L226 Difference]: Without dead ends: 799 [2020-08-18 21:48:03,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 21:48:03,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-08-18 21:48:03,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 760. [2020-08-18 21:48:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-18 21:48:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 889 transitions. [2020-08-18 21:48:03,407 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 889 transitions. Word has length 145 [2020-08-18 21:48:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:03,409 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 889 transitions. [2020-08-18 21:48:03,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:48:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 889 transitions. [2020-08-18 21:48:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 21:48:03,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:03,412 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:03,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:48:03,412 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash 929993430, now seen corresponding path program 1 times [2020-08-18 21:48:03,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:03,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854726980] [2020-08-18 21:48:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,724 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:48:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:48:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 21:48:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 21:48:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 21:48:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:48:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 21:48:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 21:48:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-18 21:48:03,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854726980] [2020-08-18 21:48:03,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:03,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 21:48:03,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906350141] [2020-08-18 21:48:03,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:48:03,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:03,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:48:03,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:48:03,901 INFO L87 Difference]: Start difference. First operand 760 states and 889 transitions. Second operand 11 states. [2020-08-18 21:48:04,476 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:06,167 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:06,436 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:06,700 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:06,949 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:07,173 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:07,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:07,563 INFO L93 Difference]: Finished difference Result 888 states and 1101 transitions. [2020-08-18 21:48:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 21:48:07,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-18 21:48:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:07,568 INFO L225 Difference]: With dead ends: 888 [2020-08-18 21:48:07,569 INFO L226 Difference]: Without dead ends: 885 [2020-08-18 21:48:07,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-18 21:48:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-18 21:48:07,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 760. [2020-08-18 21:48:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-18 21:48:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 886 transitions. [2020-08-18 21:48:07,708 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 886 transitions. Word has length 149 [2020-08-18 21:48:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:07,709 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 886 transitions. [2020-08-18 21:48:07,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:48:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 886 transitions. [2020-08-18 21:48:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 21:48:07,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:07,712 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:07,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:48:07,712 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:07,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:07,713 INFO L82 PathProgramCache]: Analyzing trace with hash 432107741, now seen corresponding path program 1 times [2020-08-18 21:48:07,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:07,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009284395] [2020-08-18 21:48:07,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,009 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:08,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:48:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:48:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:48:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 21:48:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:48:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 21:48:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 21:48:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 21:48:08,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009284395] [2020-08-18 21:48:08,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:08,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 21:48:08,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405492425] [2020-08-18 21:48:08,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:48:08,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:08,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:48:08,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:48:08,310 INFO L87 Difference]: Start difference. First operand 760 states and 886 transitions. Second operand 12 states. [2020-08-18 21:48:08,846 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:09,422 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:10,178 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:10,438 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:10,671 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:10,904 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:11,171 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:11,429 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:12,598 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:13,328 INFO L93 Difference]: Finished difference Result 1786 states and 2220 transitions. [2020-08-18 21:48:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 21:48:13,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2020-08-18 21:48:13,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:13,336 INFO L225 Difference]: With dead ends: 1786 [2020-08-18 21:48:13,337 INFO L226 Difference]: Without dead ends: 1168 [2020-08-18 21:48:13,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 21:48:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-18 21:48:13,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1022. [2020-08-18 21:48:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-08-18 21:48:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1207 transitions. [2020-08-18 21:48:13,685 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1207 transitions. Word has length 149 [2020-08-18 21:48:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:13,686 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1207 transitions. [2020-08-18 21:48:13,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:48:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1207 transitions. [2020-08-18 21:48:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-18 21:48:13,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:13,694 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:13,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:48:13,695 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:13,695 INFO L82 PathProgramCache]: Analyzing trace with hash -706947900, now seen corresponding path program 2 times [2020-08-18 21:48:13,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:13,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148824669] [2020-08-18 21:48:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:48:13,789 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:48:13,790 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:48:13,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:48:13,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:48:13 BoogieIcfgContainer [2020-08-18 21:48:13,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:48:13,851 INFO L168 Benchmark]: Toolchain (without parser) took 48763.39 ms. Allocated memory was 141.6 MB in the beginning and 770.2 MB in the end (delta: 628.6 MB). Free memory was 103.4 MB in the beginning and 664.4 MB in the end (delta: -561.0 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:48:13,851 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 21:48:13,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.65 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 103.2 MB in the beginning and 174.8 MB in the end (delta: -71.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:48:13,854 INFO L168 Benchmark]: Boogie Preprocessor took 86.19 ms. Allocated memory is still 205.5 MB. Free memory was 174.8 MB in the beginning and 170.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:48:13,861 INFO L168 Benchmark]: RCFGBuilder took 1102.94 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 170.6 MB in the beginning and 194.7 MB in the end (delta: -24.1 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:48:13,862 INFO L168 Benchmark]: TraceAbstraction took 46936.62 ms. Allocated memory was 234.9 MB in the beginning and 770.2 MB in the end (delta: 535.3 MB). Free memory was 193.4 MB in the beginning and 664.4 MB in the end (delta: -471.0 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:48:13,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 632.65 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 103.2 MB in the beginning and 174.8 MB in the end (delta: -71.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.19 ms. Allocated memory is still 205.5 MB. Free memory was 174.8 MB in the beginning and 170.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1102.94 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 170.6 MB in the beginning and 194.7 MB in the end (delta: -24.1 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46936.62 ms. Allocated memory was 234.9 MB in the beginning and 770.2 MB in the end (delta: 535.3 MB). Free memory was 193.4 MB in the beginning and 664.4 MB in the end (delta: -471.0 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 317]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L117] int pumpRunning = 0; [L118] int systemActive = 1; [L491] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L715] int cleanupTimeShifts = 4; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L791] int retValue_acc ; [L792] int tmp ; [L796] FCALL select_helpers() [L797] FCALL select_features() [L798] CALL, EXPR valid_product() [L934] int retValue_acc ; [L937] retValue_acc = 1 [L938] return (retValue_acc); [L798] RET, EXPR valid_product() [L798] tmp = valid_product() [L800] COND TRUE \read(tmp) [L802] FCALL setup() [L803] CALL runTest() [L782] CALL test() [L45] int splverifierCounter ; [L46] int tmp ; [L47] int tmp___0 ; [L48] int tmp___1 ; [L49] int tmp___2 ; [L52] splverifierCounter = 0 [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND TRUE \read(tmp) [L66] CALL waterRise() [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L66] RET waterRise() [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND FALSE !(\read(pumpRunning)) [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND FALSE !(\read(pumpRunning)) [L198] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND TRUE ! pumpRunning [L159] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L894] int retValue_acc ; [L897] COND FALSE !(waterLevel < 2) [L901] retValue_acc = 0 [L902] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L159] RET, EXPR isHighWaterLevel() [L159] tmp = isHighWaterLevel() [L161] COND TRUE \read(tmp) [L163] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L208] pumpRunning = 1 [L223] RET activatePump__wrappee__highWaterSensor() [L163] RET activatePump() [L198] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND TRUE tmp == 0 [L699] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L699] RET, EXPR isPumpRunning() [L699] tmp___0 = isPumpRunning() [L701] COND TRUE \read(tmp___0) [L703] CALL __automaton_fail() [L317] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.8s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 39.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1436 SDtfs, 4039 SDslu, 1705 SDs, 0 SdLazy, 9685 SolverSat, 2667 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 415 SyntacticMatches, 7 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1022occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 602 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 1347 NumberOfCodeBlocks, 1347 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1136 ConstructedInterpolants, 0 QuantifiedInterpolants, 433066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 184/214 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...