/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:28:07,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:28:07,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:28:07,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:28:07,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:28:07,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:28:07,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:28:07,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:28:07,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:28:07,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:28:07,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:28:07,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:28:07,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:28:07,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:28:07,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:28:07,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:28:07,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:28:07,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:28:07,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:28:07,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:28:07,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:28:07,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:28:07,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:28:07,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:28:07,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:28:07,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:28:07,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:28:07,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:28:07,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:28:07,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:28:07,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:28:07,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:28:07,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:28:07,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:28:07,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:28:07,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:28:07,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:28:07,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:28:07,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:28:07,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:28:07,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:28:07,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 00:28:07,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:28:07,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:28:07,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:28:07,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:28:07,867 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:28:07,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:28:07,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:28:07,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:28:07,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:28:07,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:28:07,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:28:07,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:28:07,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:28:07,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:28:07,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:28:07,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:28:07,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:28:07,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:28:07,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:28:07,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:28:07,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:28:07,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:28:07,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:28:07,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:28:07,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:28:07,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:28:07,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:28:07,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:28:07,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:28:07,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:28:08,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:28:08,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:28:08,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:28:08,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:28:08,228 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:28:08,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-22 00:28:08,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7f4f7de/ffc12033df084fb483ca0573d64064b4/FLAGe6193cee4 [2020-08-22 00:28:08,865 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:28:08,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-22 00:28:08,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7f4f7de/ffc12033df084fb483ca0573d64064b4/FLAGe6193cee4 [2020-08-22 00:28:09,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7f4f7de/ffc12033df084fb483ca0573d64064b4 [2020-08-22 00:28:09,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:28:09,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:28:09,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:09,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:28:09,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:28:09,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09, skipping insertion in model container [2020-08-22 00:28:09,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:28:09,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:28:09,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:09,538 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:28:09,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:09,759 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:28:09,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09 WrapperNode [2020-08-22 00:28:09,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:09,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:28:09,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:28:09,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:28:09,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (1/1) ... [2020-08-22 00:28:09,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:28:09,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:28:09,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:28:09,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:28:09,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:28:09,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:28:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:28:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:28:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:28:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:28:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:28:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:28:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:28:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:28:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:28:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:28:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:28:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:28:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:28:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:28:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:28:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:28:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:28:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:28:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:28:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:28:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:28:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:28:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:28:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:28:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:28:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:28:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:28:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:28:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:28:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:28:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:28:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:28:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:28:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:28:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:28:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:28:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:28:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:28:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:28:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:28:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:28:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:28:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:28:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:28:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:28:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:28:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:28:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:28:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:28:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:28:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:28:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:28:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:28:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:28:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:28:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:28:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:28:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:28:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:28:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:28:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:28:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:28:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:28:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:28:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:28:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:28:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:28:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:28:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:28:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:28:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:28:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:28:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:28:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:28:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:28:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:28:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:28:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:28:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:28:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:28:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:28:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:28:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:28:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:28:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:28:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:28:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:28:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:28:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:28:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:28:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:28:10,937 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:28:10,938 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:28:10,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:28:10 BoogieIcfgContainer [2020-08-22 00:28:10,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:28:10,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:28:10,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:28:10,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:28:10,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:28:09" (1/3) ... [2020-08-22 00:28:10,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bef6068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:28:10, skipping insertion in model container [2020-08-22 00:28:10,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:09" (2/3) ... [2020-08-22 00:28:10,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bef6068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:28:10, skipping insertion in model container [2020-08-22 00:28:10,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:28:10" (3/3) ... [2020-08-22 00:28:10,953 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-08-22 00:28:10,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:28:10,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:28:10,987 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:28:11,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:28:11,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:28:11,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:28:11,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:28:11,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:28:11,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:28:11,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:28:11,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:28:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-22 00:28:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 00:28:11,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:11,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:11,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:11,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1123456625, now seen corresponding path program 1 times [2020-08-22 00:28:11,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:11,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736193324] [2020-08-22 00:28:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:11,756 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:11,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:11,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:11,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:28:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:28:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:11,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736193324] [2020-08-22 00:28:11,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:11,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:28:11,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31053294] [2020-08-22 00:28:11,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:28:11,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:28:11,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:28:11,922 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-22 00:28:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:13,139 INFO L93 Difference]: Finished difference Result 307 states and 401 transitions. [2020-08-22 00:28:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:28:13,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 00:28:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:13,157 INFO L225 Difference]: With dead ends: 307 [2020-08-22 00:28:13,158 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 00:28:13,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:28:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 00:28:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2020-08-22 00:28:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 00:28:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-22 00:28:13,250 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46 [2020-08-22 00:28:13,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:13,250 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-22 00:28:13,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:28:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-22 00:28:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 00:28:13,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:13,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:13,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:28:13,255 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:13,255 INFO L82 PathProgramCache]: Analyzing trace with hash -790150173, now seen corresponding path program 1 times [2020-08-22 00:28:13,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:13,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481722658] [2020-08-22 00:28:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:13,600 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:13,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:13,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:28:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:13,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481722658] [2020-08-22 00:28:13,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:13,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:28:13,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180585370] [2020-08-22 00:28:13,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:28:13,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:13,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:28:13,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:28:13,684 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 4 states. [2020-08-22 00:28:14,125 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:14,968 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-08-22 00:28:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:28:14,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 00:28:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:14,977 INFO L225 Difference]: With dead ends: 234 [2020-08-22 00:28:14,977 INFO L226 Difference]: Without dead ends: 150 [2020-08-22 00:28:14,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:28:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-22 00:28:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2020-08-22 00:28:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 00:28:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-22 00:28:15,018 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47 [2020-08-22 00:28:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:15,019 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-22 00:28:15,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:28:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-22 00:28:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 00:28:15,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:15,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:15,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:28:15,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:15,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:15,022 INFO L82 PathProgramCache]: Analyzing trace with hash 271076632, now seen corresponding path program 1 times [2020-08-22 00:28:15,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:15,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824575032] [2020-08-22 00:28:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:15,372 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:15,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:15,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:28:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:15,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:28:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:15,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824575032] [2020-08-22 00:28:15,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:15,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:28:15,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727978119] [2020-08-22 00:28:15,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:28:15,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:15,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:28:15,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:28:15,463 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 8 states. [2020-08-22 00:28:15,819 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:16,162 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:16,404 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:16,643 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:17,425 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:19,205 INFO L93 Difference]: Finished difference Result 421 states and 521 transitions. [2020-08-22 00:28:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:28:19,206 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 00:28:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:19,211 INFO L225 Difference]: With dead ends: 421 [2020-08-22 00:28:19,211 INFO L226 Difference]: Without dead ends: 322 [2020-08-22 00:28:19,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:28:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-22 00:28:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 264. [2020-08-22 00:28:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-22 00:28:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 318 transitions. [2020-08-22 00:28:19,297 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 318 transitions. Word has length 51 [2020-08-22 00:28:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:19,297 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 318 transitions. [2020-08-22 00:28:19,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:28:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 318 transitions. [2020-08-22 00:28:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:28:19,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:19,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:19,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:28:19,301 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1813365187, now seen corresponding path program 1 times [2020-08-22 00:28:19,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:19,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500850250] [2020-08-22 00:28:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,708 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:28:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:28:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:19,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500850250] [2020-08-22 00:28:19,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:19,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:28:19,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90003935] [2020-08-22 00:28:19,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:28:19,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:19,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:28:19,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:28:19,845 INFO L87 Difference]: Start difference. First operand 264 states and 318 transitions. Second operand 12 states. [2020-08-22 00:28:20,267 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:20,571 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:20,845 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:21,080 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:21,610 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:22,391 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:22,777 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:23,114 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:23,426 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:23,702 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:24,131 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:24,461 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:24,714 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:26,388 INFO L93 Difference]: Finished difference Result 1065 states and 1468 transitions. [2020-08-22 00:28:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 00:28:26,389 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 00:28:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:26,402 INFO L225 Difference]: With dead ends: 1065 [2020-08-22 00:28:26,403 INFO L226 Difference]: Without dead ends: 825 [2020-08-22 00:28:26,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 00:28:26,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-08-22 00:28:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 732. [2020-08-22 00:28:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-22 00:28:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 932 transitions. [2020-08-22 00:28:26,615 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 932 transitions. Word has length 57 [2020-08-22 00:28:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:26,616 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 932 transitions. [2020-08-22 00:28:26,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:28:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 932 transitions. [2020-08-22 00:28:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 00:28:26,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:26,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:26,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:28:26,621 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:26,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:26,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2128676035, now seen corresponding path program 1 times [2020-08-22 00:28:26,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:26,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116959759] [2020-08-22 00:28:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,895 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:28:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:28:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 00:28:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:26,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116959759] [2020-08-22 00:28:26,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:26,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:28:26,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190885321] [2020-08-22 00:28:26,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:28:26,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:26,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:28:26,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:28:26,978 INFO L87 Difference]: Start difference. First operand 732 states and 932 transitions. Second operand 6 states. [2020-08-22 00:28:27,325 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:29,049 INFO L93 Difference]: Finished difference Result 1759 states and 2407 transitions. [2020-08-22 00:28:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:28:29,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 00:28:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:29,060 INFO L225 Difference]: With dead ends: 1759 [2020-08-22 00:28:29,060 INFO L226 Difference]: Without dead ends: 1051 [2020-08-22 00:28:29,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:28:29,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-08-22 00:28:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 964. [2020-08-22 00:28:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-08-22 00:28:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1220 transitions. [2020-08-22 00:28:29,299 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1220 transitions. Word has length 61 [2020-08-22 00:28:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:29,300 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 1220 transitions. [2020-08-22 00:28:29,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:28:29,300 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1220 transitions. [2020-08-22 00:28:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 00:28:29,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:29,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:29,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:28:29,304 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:29,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:29,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1754610703, now seen corresponding path program 1 times [2020-08-22 00:28:29,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:29,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020704214] [2020-08-22 00:28:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,574 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:28:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:28:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:28:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 00:28:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 00:28:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 00:28:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:28:29,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020704214] [2020-08-22 00:28:29,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:29,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:28:29,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382770551] [2020-08-22 00:28:29,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:28:29,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:29,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:28:29,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:28:29,735 INFO L87 Difference]: Start difference. First operand 964 states and 1220 transitions. Second operand 10 states. [2020-08-22 00:28:30,351 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 00:28:30,893 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:32,746 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:34,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:34,609 INFO L93 Difference]: Finished difference Result 1865 states and 2457 transitions. [2020-08-22 00:28:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:28:34,617 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 00:28:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:34,626 INFO L225 Difference]: With dead ends: 1865 [2020-08-22 00:28:34,626 INFO L226 Difference]: Without dead ends: 1168 [2020-08-22 00:28:34,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 00:28:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-22 00:28:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1071. [2020-08-22 00:28:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-22 00:28:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1331 transitions. [2020-08-22 00:28:34,990 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1331 transitions. Word has length 88 [2020-08-22 00:28:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:34,991 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1331 transitions. [2020-08-22 00:28:34,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:28:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1331 transitions. [2020-08-22 00:28:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 00:28:34,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:34,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:34,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:28:34,997 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:34,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1977854615, now seen corresponding path program 1 times [2020-08-22 00:28:34,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:34,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459307147] [2020-08-22 00:28:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,254 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:28:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:28:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:28:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 00:28:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 00:28:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:28:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:28:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 00:28:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 00:28:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 00:28:35,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459307147] [2020-08-22 00:28:35,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:35,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:28:35,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693475809] [2020-08-22 00:28:35,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:28:35,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:35,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:28:35,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:28:35,441 INFO L87 Difference]: Start difference. First operand 1071 states and 1331 transitions. Second operand 10 states. [2020-08-22 00:28:36,514 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:36,775 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:28:37,042 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:37,332 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:38,293 INFO L93 Difference]: Finished difference Result 2259 states and 2935 transitions. [2020-08-22 00:28:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:28:38,294 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-22 00:28:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:38,303 INFO L225 Difference]: With dead ends: 2259 [2020-08-22 00:28:38,303 INFO L226 Difference]: Without dead ends: 1212 [2020-08-22 00:28:38,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:28:38,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-08-22 00:28:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1101. [2020-08-22 00:28:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-08-22 00:28:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1365 transitions. [2020-08-22 00:28:38,483 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1365 transitions. Word has length 130 [2020-08-22 00:28:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:38,483 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1365 transitions. [2020-08-22 00:28:38,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:28:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1365 transitions. [2020-08-22 00:28:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-22 00:28:38,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:38,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:38,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:28:38,488 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:38,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1002064467, now seen corresponding path program 1 times [2020-08-22 00:28:38,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:38,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678839136] [2020-08-22 00:28:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,758 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:28:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:28:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:28:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 00:28:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 00:28:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:28:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 00:28:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 00:28:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 00:28:39,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678839136] [2020-08-22 00:28:39,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:39,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:28:39,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23177170] [2020-08-22 00:28:39,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:28:39,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:39,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:28:39,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:28:39,005 INFO L87 Difference]: Start difference. First operand 1101 states and 1365 transitions. Second operand 12 states. [2020-08-22 00:28:39,550 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:39,797 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:40,041 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:40,699 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:40,972 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:41,221 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:42,280 INFO L93 Difference]: Finished difference Result 2069 states and 2643 transitions. [2020-08-22 00:28:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:28:42,281 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-22 00:28:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:42,287 INFO L225 Difference]: With dead ends: 2069 [2020-08-22 00:28:42,288 INFO L226 Difference]: Without dead ends: 992 [2020-08-22 00:28:42,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:28:42,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-08-22 00:28:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 936. [2020-08-22 00:28:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-08-22 00:28:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1136 transitions. [2020-08-22 00:28:42,515 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1136 transitions. Word has length 126 [2020-08-22 00:28:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:42,515 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1136 transitions. [2020-08-22 00:28:42,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:28:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1136 transitions. [2020-08-22 00:28:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 00:28:42,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:42,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:42,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:28:42,522 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:42,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:42,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1767310158, now seen corresponding path program 1 times [2020-08-22 00:28:42,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:42,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676842679] [2020-08-22 00:28:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,818 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:42,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:28:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:28:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:28:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:28:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 00:28:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:28:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:28:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:43,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 00:28:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:43,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 00:28:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 00:28:43,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676842679] [2020-08-22 00:28:43,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:43,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:28:43,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299113899] [2020-08-22 00:28:43,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:28:43,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:43,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:28:43,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:28:43,044 INFO L87 Difference]: Start difference. First operand 936 states and 1136 transitions. Second operand 13 states. [2020-08-22 00:28:44,381 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:45,045 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:47,137 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:47,406 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:47,657 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:47,897 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:48,161 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:48,408 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:48,650 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:48,913 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:49,220 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:49,447 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:50,126 INFO L93 Difference]: Finished difference Result 2701 states and 3404 transitions. [2020-08-22 00:28:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:28:50,127 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-22 00:28:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:50,137 INFO L225 Difference]: With dead ends: 2701 [2020-08-22 00:28:50,138 INFO L226 Difference]: Without dead ends: 1789 [2020-08-22 00:28:50,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 00:28:50,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-08-22 00:28:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1687. [2020-08-22 00:28:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-22 00:28:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2019 transitions. [2020-08-22 00:28:50,512 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2019 transitions. Word has length 130 [2020-08-22 00:28:50,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:50,514 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2019 transitions. [2020-08-22 00:28:50,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:28:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2019 transitions. [2020-08-22 00:28:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 00:28:50,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:50,520 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 00:28:50,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:28:50,521 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:50,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:50,521 INFO L82 PathProgramCache]: Analyzing trace with hash 941448042, now seen corresponding path program 1 times [2020-08-22 00:28:50,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:50,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914239840] [2020-08-22 00:28:50,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,784 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:50,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:28:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:28:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:28:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:28:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:28:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 00:28:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 00:28:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:28:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 00:28:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:50,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 00:28:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 00:28:51,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914239840] [2020-08-22 00:28:51,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:51,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 00:28:51,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092001247] [2020-08-22 00:28:51,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:28:51,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:51,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:28:51,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:28:51,007 INFO L87 Difference]: Start difference. First operand 1687 states and 2019 transitions. Second operand 11 states. [2020-08-22 00:28:51,577 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:53,508 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:53,773 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:54,028 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:54,275 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:54,533 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:55,171 INFO L93 Difference]: Finished difference Result 1997 states and 2554 transitions. [2020-08-22 00:28:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 00:28:55,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-22 00:28:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:55,183 INFO L225 Difference]: With dead ends: 1997 [2020-08-22 00:28:55,184 INFO L226 Difference]: Without dead ends: 1994 [2020-08-22 00:28:55,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-22 00:28:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-08-22 00:28:55,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1687. [2020-08-22 00:28:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-22 00:28:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2009 transitions. [2020-08-22 00:28:55,567 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2009 transitions. Word has length 134 [2020-08-22 00:28:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:55,568 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2009 transitions. [2020-08-22 00:28:55,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:28:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2009 transitions. [2020-08-22 00:28:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 00:28:55,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:55,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:55,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:28:55,577 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:55,578 INFO L82 PathProgramCache]: Analyzing trace with hash 108116472, now seen corresponding path program 1 times [2020-08-22 00:28:55,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:55,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233544063] [2020-08-22 00:28:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:55,981 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:55,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:55,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:55,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:28:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:28:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:28:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:28:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 00:28:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:28:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:28:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 00:28:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 00:28:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 00:28:56,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233544063] [2020-08-22 00:28:56,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:56,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:28:56,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525016710] [2020-08-22 00:28:56,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:28:56,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:56,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:28:56,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:28:56,164 INFO L87 Difference]: Start difference. First operand 1687 states and 2009 transitions. Second operand 12 states. [2020-08-22 00:28:56,579 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:57,371 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:57,633 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:57,877 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:58,112 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:58,335 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:58,682 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:59,409 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:59,701 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:59,958 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:02,037 INFO L93 Difference]: Finished difference Result 4159 states and 5274 transitions. [2020-08-22 00:29:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 00:29:02,037 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-22 00:29:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:02,053 INFO L225 Difference]: With dead ends: 4159 [2020-08-22 00:29:02,053 INFO L226 Difference]: Without dead ends: 2806 [2020-08-22 00:29:02,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-22 00:29:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-08-22 00:29:02,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2479. [2020-08-22 00:29:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-08-22 00:29:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3004 transitions. [2020-08-22 00:29:02,543 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3004 transitions. Word has length 134 [2020-08-22 00:29:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:02,546 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3004 transitions. [2020-08-22 00:29:02,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:29:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3004 transitions. [2020-08-22 00:29:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 00:29:02,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:02,557 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:02,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:29:02,558 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:02,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:02,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1415393837, now seen corresponding path program 2 times [2020-08-22 00:29:02,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:02,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770005558] [2020-08-22 00:29:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,858 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:02,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:29:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 00:29:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:29:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 00:29:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 00:29:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 00:29:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:29:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 00:29:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 00:29:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-22 00:29:03,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770005558] [2020-08-22 00:29:03,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:03,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 00:29:03,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265471146] [2020-08-22 00:29:03,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 00:29:03,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:03,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 00:29:03,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:29:03,228 INFO L87 Difference]: Start difference. First operand 2479 states and 3004 transitions. Second operand 14 states. [2020-08-22 00:29:03,735 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:04,308 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:04,805 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:05,085 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:05,348 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:05,626 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:05,931 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:06,203 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190