/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=SHALLOWEST --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_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:38:11,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:38:11,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:38:11,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:38:11,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:38:11,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:38:11,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:38:11,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:38:11,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:38:11,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:38:11,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:38:11,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:38:11,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:38:11,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:38:11,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:38:11,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:38:11,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:38:11,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:38:11,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:38:11,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:38:11,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:38:11,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:38:11,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:38:11,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:38:11,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:38:11,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:38:11,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:38:11,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:38:11,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:38:11,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:38:11,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:38:11,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:38:11,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:38:11,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:38:11,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:38:11,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:38:11,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:38:11,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:38:11,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:38:11,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:38:11,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:38:11,721 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 [2020-08-21 19:38:11,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:38:11,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:38:11,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:38:11,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:38:11,760 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:38:11,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:38:11,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:38:11,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:38:11,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:38:11,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:38:11,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:38:11,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:38:11,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:38:11,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:38:11,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:38:11,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:38:11,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:38:11,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:38:11,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:38:11,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:38:11,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:38:11,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:38:11,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:38:11,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:38:11,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:38:11,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:38:11,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:38:11,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:38:11,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:38:11,767 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=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:38:12,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:38:12,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:38:12,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:38:12,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:38:12,130 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:38:12,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-21 19:38:12,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f449bfc/a3677cb63d1e447394d5940674ab109b/FLAG60392d357 [2020-08-21 19:38:12,788 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:38:12,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-21 19:38:12,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f449bfc/a3677cb63d1e447394d5940674ab109b/FLAG60392d357 [2020-08-21 19:38:13,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f449bfc/a3677cb63d1e447394d5940674ab109b [2020-08-21 19:38:13,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:38:13,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:38:13,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:38:13,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:38:13,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:38:13,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180afe8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13, skipping insertion in model container [2020-08-21 19:38:13,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:38:13,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:38:13,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:38:13,760 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:38:13,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:38:13,882 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:38:13,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13 WrapperNode [2020-08-21 19:38:13,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:38:13,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:38:13,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:38:13,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:38:13,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (1/1) ... [2020-08-21 19:38:13,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:38:13,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:38:13,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:38:13,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:38:13,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (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 [2020-08-21 19:38:14,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:38:14,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:38:14,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:38:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:38:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:38:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:38:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:38:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:38:14,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:38:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 19:38:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:38:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:38:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:38:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:38:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:38:14,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:38:14,055 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:38:14,055 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:38:14,055 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:38:14,055 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:38:14,056 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:38:14,056 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:38:14,056 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:38:14,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:38:14,056 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:38:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:38:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:38:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 19:38:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:38:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:38:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:38:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:38:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:38:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:38:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:38:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:38:14,059 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:38:14,059 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:38:14,059 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 19:38:14,059 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 19:38:14,060 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:38:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:38:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:38:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:38:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:38:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:38:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:38:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:38:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:38:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:38:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:38:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:38:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:38:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:38:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:38:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:38:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:38:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:38:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:38:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:38:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:38:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:38:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:38:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:38:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 19:38:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 19:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:38:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:38:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 19:38:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:38:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:38:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:38:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:38:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 19:38:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:38:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:38:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:38:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:38:15,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:38:15,156 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:38:15,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:38:15 BoogieIcfgContainer [2020-08-21 19:38:15,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:38:15,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:38:15,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:38:15,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:38:15,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:38:13" (1/3) ... [2020-08-21 19:38:15,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43518858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:38:15, skipping insertion in model container [2020-08-21 19:38:15,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:38:13" (2/3) ... [2020-08-21 19:38:15,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43518858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:38:15, skipping insertion in model container [2020-08-21 19:38:15,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:38:15" (3/3) ... [2020-08-21 19:38:15,169 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-21 19:38:15,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:38:15,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:38:15,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:38:15,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:38:15,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:38:15,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:38:15,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:38:15,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:38:15,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:38:15,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:38:15,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:38:15,244 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 19:38:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 19:38:15,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:15,255 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] [2020-08-21 19:38:15,255 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:15,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-21 19:38:15,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:15,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034727558] [2020-08-21 19:38:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:15,951 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:16,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:38:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:38:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:16,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034727558] [2020-08-21 19:38:16,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:16,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:38:16,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934435941] [2020-08-21 19:38:16,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:38:16,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:16,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:38:16,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:38:16,084 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-21 19:38:17,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:17,262 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-21 19:38:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:38:17,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 19:38:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:17,289 INFO L225 Difference]: With dead ends: 306 [2020-08-21 19:38:17,290 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 19:38:17,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:38:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 19:38:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-21 19:38:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 19:38:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-21 19:38:17,454 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-21 19:38:17,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:17,455 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-21 19:38:17,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:38:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-21 19:38:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 19:38:17,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:17,483 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] [2020-08-21 19:38:17,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:38:17,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:17,485 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-21 19:38:17,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:17,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025296420] [2020-08-21 19:38:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:17,872 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:17,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:17,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:38:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:38:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:17,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025296420] [2020-08-21 19:38:17,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:17,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:38:17,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264621301] [2020-08-21 19:38:17,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:38:17,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:17,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:38:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:38:17,918 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-21 19:38:18,349 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:19,153 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-21 19:38:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:38:19,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 19:38:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:19,163 INFO L225 Difference]: With dead ends: 235 [2020-08-21 19:38:19,163 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 19:38:19,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:38:19,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 19:38:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-21 19:38:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 19:38:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-21 19:38:19,206 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-21 19:38:19,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:19,206 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-21 19:38:19,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:38:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-21 19:38:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 19:38:19,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:19,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:19,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:38:19,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:19,210 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-21 19:38:19,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:19,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108836109] [2020-08-21 19:38:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:19,524 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:19,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:19,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:19,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:38:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:19,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:38:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:19,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108836109] [2020-08-21 19:38:19,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:19,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:38:19,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346874613] [2020-08-21 19:38:19,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:38:19,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:38:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:38:19,606 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-21 19:38:19,978 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:20,260 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:20,502 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:20,743 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:21,930 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-21 19:38:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:38:21,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 19:38:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:21,936 INFO L225 Difference]: With dead ends: 248 [2020-08-21 19:38:21,936 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 19:38:21,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:38:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 19:38:21,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-21 19:38:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 19:38:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-21 19:38:21,967 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-21 19:38:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:21,967 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-21 19:38:21,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:38:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-21 19:38:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 19:38:21,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:21,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:21,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:38:21,970 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:21,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:21,971 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-21 19:38:21,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:21,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436034838] [2020-08-21 19:38:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,245 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:38:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 19:38:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 19:38:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:22,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436034838] [2020-08-21 19:38:22,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:22,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:38:22,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839765039] [2020-08-21 19:38:22,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:38:22,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:22,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:38:22,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:38:22,331 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-21 19:38:22,637 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:23,809 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:24,509 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-21 19:38:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:38:24,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 19:38:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:24,517 INFO L225 Difference]: With dead ends: 345 [2020-08-21 19:38:24,518 INFO L226 Difference]: Without dead ends: 246 [2020-08-21 19:38:24,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:38:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-21 19:38:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-21 19:38:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-21 19:38:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-21 19:38:24,600 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-21 19:38:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:24,600 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-21 19:38:24,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:38:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-21 19:38:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 19:38:24,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:24,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:24,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:38:24,604 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:24,605 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-21 19:38:24,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:24,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792417629] [2020-08-21 19:38:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:24,971 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:24,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:38:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 19:38:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 19:38:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:38:25,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792417629] [2020-08-21 19:38:25,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:38:25,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 19:38:25,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478709115] [2020-08-21 19:38:25,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:38:25,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:25,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:38:25,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:38:25,139 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-21 19:38:25,677 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:25,989 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:26,248 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:26,491 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:27,078 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:27,985 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:28,303 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:28,548 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:28,797 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:29,074 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:29,349 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:30,717 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:31,067 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:31,709 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-21 19:38:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 19:38:31,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 19:38:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:31,717 INFO L225 Difference]: With dead ends: 713 [2020-08-21 19:38:31,718 INFO L226 Difference]: Without dead ends: 534 [2020-08-21 19:38:31,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 19:38:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-21 19:38:31,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-21 19:38:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-21 19:38:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-21 19:38:31,824 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-21 19:38:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:31,825 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-21 19:38:31,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:38:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-21 19:38:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 19:38:31,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:31,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:31,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:38:31,830 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:31,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-21 19:38:31,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:31,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291596552] [2020-08-21 19:38:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,157 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:32,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:38:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:38:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:38:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 19:38:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 19:38:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 19:38:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:38:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 19:38:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 19:38:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 19:38:32,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291596552] [2020-08-21 19:38:32,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:32,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 19:38:32,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790551165] [2020-08-21 19:38:32,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:38:32,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:32,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:38:32,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:38:32,449 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-21 19:38:32,908 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:33,534 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:34,073 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:34,349 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 19:38:34,651 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:34,928 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:35,185 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:35,462 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 19:38:35,774 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:36,050 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:37,568 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:37,809 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:38:38,062 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:38,297 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:38,722 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-21 19:38:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 19:38:38,723 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-21 19:38:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:38,728 INFO L225 Difference]: With dead ends: 957 [2020-08-21 19:38:38,728 INFO L226 Difference]: Without dead ends: 509 [2020-08-21 19:38:38,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 19:38:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-21 19:38:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-21 19:38:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-21 19:38:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-21 19:38:38,804 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-21 19:38:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:38,804 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-21 19:38:38,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:38:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-21 19:38:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 19:38:38,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:38,807 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] [2020-08-21 19:38:38,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:38:38,808 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:38,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-21 19:38:38,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:38,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639631557] [2020-08-21 19:38:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,071 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:39,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:38:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:38:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:38:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 19:38:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:38:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 19:38:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 19:38:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 19:38:39,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639631557] [2020-08-21 19:38:39,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:39,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:38:39,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820693433] [2020-08-21 19:38:39,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:38:39,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:39,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:38:39,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:38:39,296 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-21 19:38:40,381 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:40,624 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:40,834 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:41,406 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:41,651 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:41,870 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:42,739 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-21 19:38:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:38:42,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 19:38:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:42,744 INFO L225 Difference]: With dead ends: 807 [2020-08-21 19:38:42,745 INFO L226 Difference]: Without dead ends: 389 [2020-08-21 19:38:42,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:38:42,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-21 19:38:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-21 19:38:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-21 19:38:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-21 19:38:42,817 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-21 19:38:42,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:42,817 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-21 19:38:42,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:38:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-21 19:38:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 19:38:42,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:42,820 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:42,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:38:42,820 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:42,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:42,821 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-21 19:38:42,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:42,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12554521] [2020-08-21 19:38:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,080 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:43,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:38:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:38:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:38:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 19:38:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 19:38:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:38:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 19:38:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 19:38:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 19:38:43,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12554521] [2020-08-21 19:38:43,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:43,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 19:38:43,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716233630] [2020-08-21 19:38:43,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:38:43,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:43,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:38:43,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:38:43,230 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-21 19:38:44,495 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:44,720 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:44,968 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:45,217 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:45,548 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-21 19:38:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:38:45,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-21 19:38:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:45,552 INFO L225 Difference]: With dead ends: 670 [2020-08-21 19:38:45,553 INFO L226 Difference]: Without dead ends: 394 [2020-08-21 19:38:45,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:38:45,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-21 19:38:45,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-21 19:38:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-21 19:38:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-21 19:38:45,624 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-21 19:38:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:45,625 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-21 19:38:45,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:38:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-21 19:38:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 19:38:45,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:45,627 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:45,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:38:45,628 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-21 19:38:45,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:45,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752389948] [2020-08-21 19:38:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:45,935 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:38:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:38:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:38:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 19:38:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 19:38:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:38:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 19:38:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 19:38:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 19:38:46,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752389948] [2020-08-21 19:38:46,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:46,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 19:38:46,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232811502] [2020-08-21 19:38:46,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:38:46,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:46,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:38:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:38:46,139 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-21 19:38:46,823 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:48,533 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:48,774 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:48,998 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:49,232 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:49,507 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:49,835 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-21 19:38:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 19:38:49,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-21 19:38:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:49,839 INFO L225 Difference]: With dead ends: 401 [2020-08-21 19:38:49,839 INFO L226 Difference]: Without dead ends: 398 [2020-08-21 19:38:49,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:38:49,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-21 19:38:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-21 19:38:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-21 19:38:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-21 19:38:49,919 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-21 19:38:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:49,921 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-21 19:38:49,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:38:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-21 19:38:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 19:38:49,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:49,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:49,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:38:49,924 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:49,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-21 19:38:49,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:49,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009825651] [2020-08-21 19:38:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,297 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:38:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:38:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:38:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 19:38:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 19:38:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:38:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 19:38:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 19:38:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 19:38:50,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009825651] [2020-08-21 19:38:50,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:50,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:38:50,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802201410] [2020-08-21 19:38:50,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:38:50,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:50,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:38:50,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:38:50,470 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-21 19:38:51,291 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:38:52,061 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:52,582 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:38:52,852 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:53,079 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:53,312 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:53,573 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:53,801 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:55,248 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:55,486 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:38:56,180 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-21 19:38:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 19:38:56,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-21 19:38:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:38:56,186 INFO L225 Difference]: With dead ends: 881 [2020-08-21 19:38:56,186 INFO L226 Difference]: Without dead ends: 600 [2020-08-21 19:38:56,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 19:38:56,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-21 19:38:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-21 19:38:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-21 19:38:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-21 19:38:56,289 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-21 19:38:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:38:56,289 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-21 19:38:56,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:38:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-21 19:38:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-21 19:38:56,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:38:56,293 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:38:56,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:38:56,294 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:38:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:38:56,294 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-21 19:38:56,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:38:56,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474506987] [2020-08-21 19:38:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:38:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,608 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:38:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:38:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:38:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:38:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:38:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:38:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:38:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:38:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:38:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 19:38:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:38:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:38:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:38:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-21 19:38:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-21 19:38:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-21 19:38:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:38:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:38:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:38:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-21 19:38:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-21 19:38:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:38:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 19:38:56,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474506987] [2020-08-21 19:38:56,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:38:56,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 19:38:56,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723320258] [2020-08-21 19:38:56,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 19:38:56,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:38:56,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 19:38:56,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:38:56,836 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-21 19:38:57,238 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:57,818 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:38:58,683 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:58,967 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:59,224 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:59,478 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:38:59,758 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:38:59,998 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:39:01,263 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:01,504 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:39:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:02,672 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-21 19:39:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 19:39:02,673 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-21 19:39:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:02,679 INFO L225 Difference]: With dead ends: 1240 [2020-08-21 19:39:02,679 INFO L226 Difference]: Without dead ends: 814 [2020-08-21 19:39:02,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 19:39:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-21 19:39:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-21 19:39:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 19:39:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-21 19:39:02,784 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-21 19:39:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:02,785 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-21 19:39:02,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 19:39:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-21 19:39:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 19:39:02,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:02,788 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-08-21 19:39:02,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:39:02,789 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:02,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:02,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-21 19:39:02,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:02,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482511] [2020-08-21 19:39:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,097 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:39:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:39:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:39:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:39:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:39:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 19:39:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:39:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:39:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 19:39:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 19:39:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:39:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 19:39:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 19:39:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 19:39:03,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482511] [2020-08-21 19:39:03,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:39:03,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 19:39:03,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929493007] [2020-08-21 19:39:03,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:39:03,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:39:03,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:39:03,505 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-21 19:39:04,575 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:04,842 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:39:06,406 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:39:06,641 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:06,864 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:39:07,304 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-21 19:39:08,836 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 19:39:09,100 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 19:39:09,392 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:39:09,657 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:39:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:10,630 INFO L93 Difference]: Finished difference Result 1408 states and 1753 transitions. [2020-08-21 19:39:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 19:39:10,631 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-21 19:39:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:10,637 INFO L225 Difference]: With dead ends: 1408 [2020-08-21 19:39:10,637 INFO L226 Difference]: Without dead ends: 982 [2020-08-21 19:39:10,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 19:39:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-08-21 19:39:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 833. [2020-08-21 19:39:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-08-21 19:39:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 968 transitions. [2020-08-21 19:39:10,840 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 968 transitions. Word has length 192 [2020-08-21 19:39:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:10,843 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 968 transitions. [2020-08-21 19:39:10,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:39:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 968 transitions. [2020-08-21 19:39:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 19:39:10,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:10,846 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-08-21 19:39:10,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:39:10,847 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:10,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:10,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1185901215, now seen corresponding path program 1 times [2020-08-21 19:39:10,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:10,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284510771] [2020-08-21 19:39:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,119 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:39:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:39:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:39:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:39:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:39:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 19:39:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:39:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:39:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 19:39:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 19:39:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:39:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 19:39:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:39:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 19:39:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:11,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 19:39:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat