/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:57:39,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:57:39,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:57:39,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:57:39,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:57:39,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:57:39,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:57:39,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:57:39,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:57:39,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:57:39,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:57:39,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:57:39,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:57:39,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:57:39,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:57:39,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:57:39,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:57:39,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:57:39,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:57:39,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:57:39,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:57:39,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:57:39,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:57:39,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:57:39,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:57:39,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:57:39,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:57:39,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:57:39,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:57:39,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:57:39,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:57:39,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:57:39,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:57:39,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:57:39,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:57:39,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:57:39,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:57:39,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:57:39,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:57:39,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:57:39,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:57:39,628 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 [2020-08-19 00:57:39,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:57:39,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:57:39,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:57:39,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:57:39,684 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:57:39,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:57:39,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:57:39,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:57:39,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:57:39,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:57:39,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:57:39,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:57:39,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:57:39,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:57:39,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:57:39,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:57:39,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:57:39,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:57:39,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:57:39,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:57:39,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:57:39,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:57:39,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:57:39,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:57:39,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:57:39,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:57:39,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:57:39,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:57:39,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:57:39,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:57:40,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:57:40,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:57:40,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:57:40,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:57:40,033 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:57:40,034 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-19 00:57:40,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc45725b9/ac889354330a41a5b9b6c0cf1af18bb1/FLAG53b6b0a37 [2020-08-19 00:57:40,633 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:57:40,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-19 00:57:40,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc45725b9/ac889354330a41a5b9b6c0cf1af18bb1/FLAG53b6b0a37 [2020-08-19 00:57:40,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc45725b9/ac889354330a41a5b9b6c0cf1af18bb1 [2020-08-19 00:57:40,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:57:40,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:57:40,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:57:40,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:57:40,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:57:40,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:57:40" (1/1) ... [2020-08-19 00:57:40,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c56d103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:40, skipping insertion in model container [2020-08-19 00:57:40,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:57:40" (1/1) ... [2020-08-19 00:57:40,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:57:41,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:57:41,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:57:41,491 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:57:41,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:57:41,633 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:57:41,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41 WrapperNode [2020-08-19 00:57:41,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:57:41,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:57:41,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:57:41,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:57:41,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (1/1) ... [2020-08-19 00:57:41,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (1/1) ... [2020-08-19 00:57:41,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (1/1) ... [2020-08-19 00:57:41,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (1/1) ... [2020-08-19 00:57:41,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (1/1) ... [2020-08-19 00:57:41,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (1/1) ... [2020-08-19 00:57:41,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (1/1) ... [2020-08-19 00:57:41,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:57:41,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:57:41,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:57:41,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:57:41,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (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 [2020-08-19 00:57:41,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:57:41,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:57:41,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:57:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:57:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:57:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:57:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:57:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:57:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:57:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:57:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:57:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:57:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:57:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:57:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:57:41,808 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:57:41,808 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:57:41,808 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:57:41,808 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:57:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:57:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:57:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:57:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:57:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:57:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:57:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:57:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:57:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:57:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:57:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:57:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:57:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:57:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:57:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:57:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:57:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:57:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:57:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:57:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:57:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:57:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:57:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:57:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:57:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:57:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:57:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:57:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:57:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:57:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:57:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:57:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:57:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:57:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:57:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:57:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:57:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:57:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:57:42,990 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:57:42,991 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:57:42,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:57:42 BoogieIcfgContainer [2020-08-19 00:57:42,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:57:42,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:57:42,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:57:43,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:57:43,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:57:40" (1/3) ... [2020-08-19 00:57:43,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe7da78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:57:43, skipping insertion in model container [2020-08-19 00:57:43,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:41" (2/3) ... [2020-08-19 00:57:43,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe7da78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:57:43, skipping insertion in model container [2020-08-19 00:57:43,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:57:42" (3/3) ... [2020-08-19 00:57:43,005 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-08-19 00:57:43,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:57:43,025 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:57:43,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:57:43,072 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:57:43,072 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:57:43,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:57:43,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:57:43,074 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:57:43,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:57:43,074 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:57:43,075 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:57:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-19 00:57:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:57:43,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:43,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:43,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:43,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1134611440, now seen corresponding path program 1 times [2020-08-19 00:57:43,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:43,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062364682] [2020-08-19 00:57:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,841 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:43,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:57:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:57:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:43,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062364682] [2020-08-19 00:57:43,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:43,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:57:43,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802465545] [2020-08-19 00:57:43,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:57:43,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:57:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:57:43,988 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 4 states. [2020-08-19 00:57:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:45,185 INFO L93 Difference]: Finished difference Result 343 states and 449 transitions. [2020-08-19 00:57:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:57:45,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:57:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:45,202 INFO L225 Difference]: With dead ends: 343 [2020-08-19 00:57:45,202 INFO L226 Difference]: Without dead ends: 190 [2020-08-19 00:57:45,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:57:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-19 00:57:45,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-08-19 00:57:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-19 00:57:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2020-08-19 00:57:45,307 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 51 [2020-08-19 00:57:45,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:45,308 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2020-08-19 00:57:45,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:57:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2020-08-19 00:57:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:57:45,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:45,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:45,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:57:45,313 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash -179918531, now seen corresponding path program 1 times [2020-08-19 00:57:45,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:45,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301555356] [2020-08-19 00:57:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,693 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:45,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:57:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:57:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:45,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301555356] [2020-08-19 00:57:45,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:45,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:57:45,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276279390] [2020-08-19 00:57:45,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:57:45,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:57:45,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:57:45,753 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 5 states. [2020-08-19 00:57:46,252 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:47,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:47,425 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2020-08-19 00:57:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:57:47,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:57:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:47,429 INFO L225 Difference]: With dead ends: 282 [2020-08-19 00:57:47,430 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 00:57:47,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:57:47,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 00:57:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 145. [2020-08-19 00:57:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-19 00:57:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-08-19 00:57:47,508 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 52 [2020-08-19 00:57:47,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:47,509 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-08-19 00:57:47,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:57:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-08-19 00:57:47,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 00:57:47,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:47,512 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] [2020-08-19 00:57:47,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:57:47,512 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:47,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1227863388, now seen corresponding path program 1 times [2020-08-19 00:57:47,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:47,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016651501] [2020-08-19 00:57:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,846 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:57:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:57:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:47,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016651501] [2020-08-19 00:57:47,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:47,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:57:47,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651184988] [2020-08-19 00:57:47,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:57:47,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:47,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:57:47,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:57:47,971 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 9 states. [2020-08-19 00:57:48,452 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:48,778 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:49,032 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:49,272 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:50,041 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:52,374 INFO L93 Difference]: Finished difference Result 487 states and 618 transitions. [2020-08-19 00:57:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:57:52,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 00:57:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:52,381 INFO L225 Difference]: With dead ends: 487 [2020-08-19 00:57:52,381 INFO L226 Difference]: Without dead ends: 370 [2020-08-19 00:57:52,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:57:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-08-19 00:57:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 305. [2020-08-19 00:57:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-19 00:57:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2020-08-19 00:57:52,469 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 56 [2020-08-19 00:57:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:52,470 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2020-08-19 00:57:52,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:57:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2020-08-19 00:57:52,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 00:57:52,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:52,473 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] [2020-08-19 00:57:52,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:57:52,474 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:52,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:52,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1601957820, now seen corresponding path program 1 times [2020-08-19 00:57:52,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:52,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403650627] [2020-08-19 00:57:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,814 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:57:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:57:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:57:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:52,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403650627] [2020-08-19 00:57:52,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:52,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:57:52,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534188102] [2020-08-19 00:57:52,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:57:52,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:52,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:57:52,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:57:52,962 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand 9 states. [2020-08-19 00:57:53,462 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:54,419 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:54,924 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:55,253 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:55,525 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:57,384 INFO L93 Difference]: Finished difference Result 973 states and 1285 transitions. [2020-08-19 00:57:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:57:57,385 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 00:57:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:57,394 INFO L225 Difference]: With dead ends: 973 [2020-08-19 00:57:57,394 INFO L226 Difference]: Without dead ends: 696 [2020-08-19 00:57:57,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:57:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-08-19 00:57:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 558. [2020-08-19 00:57:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-08-19 00:57:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 688 transitions. [2020-08-19 00:57:57,540 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 688 transitions. Word has length 62 [2020-08-19 00:57:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:57,540 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 688 transitions. [2020-08-19 00:57:57,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:57:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 688 transitions. [2020-08-19 00:57:57,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 00:57:57,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:57,544 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] [2020-08-19 00:57:57,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:57:57,544 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:57,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1204720808, now seen corresponding path program 1 times [2020-08-19 00:57:57,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:57,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676701446] [2020-08-19 00:57:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,853 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:57:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:57:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 00:57:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:57,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676701446] [2020-08-19 00:57:57,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:57,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:57:57,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642118897] [2020-08-19 00:57:57,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:57:57,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:57,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:57:57,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:57:57,976 INFO L87 Difference]: Start difference. First operand 558 states and 688 transitions. Second operand 10 states. [2020-08-19 00:57:58,548 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:59,566 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:59,819 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:00,077 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:00,813 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:02,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:02,238 INFO L93 Difference]: Finished difference Result 1531 states and 2090 transitions. [2020-08-19 00:58:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 00:58:02,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 00:58:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:02,247 INFO L225 Difference]: With dead ends: 1531 [2020-08-19 00:58:02,247 INFO L226 Difference]: Without dead ends: 1001 [2020-08-19 00:58:02,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:58:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-08-19 00:58:02,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 805. [2020-08-19 00:58:02,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-08-19 00:58:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2020-08-19 00:58:02,475 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 66 [2020-08-19 00:58:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:02,478 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2020-08-19 00:58:02,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:58:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2020-08-19 00:58:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 00:58:02,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:02,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:58:02,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:58:02,484 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:02,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:02,485 INFO L82 PathProgramCache]: Analyzing trace with hash -763723638, now seen corresponding path program 1 times [2020-08-19 00:58:02,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:02,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575969350] [2020-08-19 00:58:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,744 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:58:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:58:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 00:58:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 00:58:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:02,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575969350] [2020-08-19 00:58:02,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:02,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:58:02,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887967830] [2020-08-19 00:58:02,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:58:02,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:02,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:58:02,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:58:02,919 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 10 states. [2020-08-19 00:58:04,105 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:04,382 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:58:04,646 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:04,899 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:06,466 INFO L93 Difference]: Finished difference Result 1854 states and 2470 transitions. [2020-08-19 00:58:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:58:06,467 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-19 00:58:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:06,479 INFO L225 Difference]: With dead ends: 1854 [2020-08-19 00:58:06,479 INFO L226 Difference]: Without dead ends: 1077 [2020-08-19 00:58:06,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:58:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-08-19 00:58:06,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 831. [2020-08-19 00:58:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-19 00:58:06,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1011 transitions. [2020-08-19 00:58:06,660 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1011 transitions. Word has length 93 [2020-08-19 00:58:06,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:06,661 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1011 transitions. [2020-08-19 00:58:06,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:58:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1011 transitions. [2020-08-19 00:58:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 00:58:06,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:06,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:58:06,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:58:06,666 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash -836110196, now seen corresponding path program 1 times [2020-08-19 00:58:06,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:06,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435197577] [2020-08-19 00:58:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,955 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:58:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:58:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 00:58:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 00:58:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:07,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435197577] [2020-08-19 00:58:07,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:07,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:58:07,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832323127] [2020-08-19 00:58:07,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:58:07,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:07,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:58:07,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:58:07,181 INFO L87 Difference]: Start difference. First operand 831 states and 1011 transitions. Second operand 12 states. [2020-08-19 00:58:07,886 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:08,139 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:08,384 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:09,196 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:09,484 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:09,754 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:11,307 INFO L93 Difference]: Finished difference Result 1908 states and 2587 transitions. [2020-08-19 00:58:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:58:11,309 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-19 00:58:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:11,318 INFO L225 Difference]: With dead ends: 1908 [2020-08-19 00:58:11,319 INFO L226 Difference]: Without dead ends: 1105 [2020-08-19 00:58:11,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:58:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-08-19 00:58:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 847. [2020-08-19 00:58:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-19 00:58:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-19 00:58:11,487 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 93 [2020-08-19 00:58:11,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:11,488 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-19 00:58:11,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:58:11,488 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-19 00:58:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 00:58:11,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:11,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:58:11,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:58:11,491 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash -506344435, now seen corresponding path program 1 times [2020-08-19 00:58:11,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:11,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660309717] [2020-08-19 00:58:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,758 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:58:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:58:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 00:58:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 00:58:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:11,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660309717] [2020-08-19 00:58:11,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:11,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:58:11,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697450951] [2020-08-19 00:58:11,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:58:11,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:11,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:58:11,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:58:11,934 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 8 states. [2020-08-19 00:58:12,364 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:12,963 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:15,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:15,892 INFO L93 Difference]: Finished difference Result 2850 states and 3893 transitions. [2020-08-19 00:58:15,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:58:15,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 00:58:15,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:15,907 INFO L225 Difference]: With dead ends: 2850 [2020-08-19 00:58:15,907 INFO L226 Difference]: Without dead ends: 2031 [2020-08-19 00:58:15,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 00:58:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-08-19 00:58:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1687. [2020-08-19 00:58:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-19 00:58:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2069 transitions. [2020-08-19 00:58:16,373 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2069 transitions. Word has length 93 [2020-08-19 00:58:16,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:16,373 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2069 transitions. [2020-08-19 00:58:16,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:58:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2069 transitions. [2020-08-19 00:58:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 00:58:16,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:16,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:58:16,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:58:16,378 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:16,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:16,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1600364013, now seen corresponding path program 1 times [2020-08-19 00:58:16,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:16,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330761509] [2020-08-19 00:58:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,709 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:58:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 00:58:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 00:58:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:16,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330761509] [2020-08-19 00:58:16,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:16,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:58:16,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169427126] [2020-08-19 00:58:16,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:58:16,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:16,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:58:16,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:58:16,886 INFO L87 Difference]: Start difference. First operand 1687 states and 2069 transitions. Second operand 8 states. [2020-08-19 00:58:17,518 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:20,956 INFO L93 Difference]: Finished difference Result 3406 states and 4667 transitions. [2020-08-19 00:58:20,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 00:58:20,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-19 00:58:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:20,982 INFO L225 Difference]: With dead ends: 3406 [2020-08-19 00:58:20,982 INFO L226 Difference]: Without dead ends: 3403 [2020-08-19 00:58:20,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:58:20,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-08-19 00:58:21,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 2826. [2020-08-19 00:58:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-08-19 00:58:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3547 transitions. [2020-08-19 00:58:21,633 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3547 transitions. Word has length 97 [2020-08-19 00:58:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:21,636 INFO L479 AbstractCegarLoop]: Abstraction has 2826 states and 3547 transitions. [2020-08-19 00:58:21,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:58:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3547 transitions. [2020-08-19 00:58:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-19 00:58:21,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:21,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 00:58:21,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:58:21,651 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash -882849354, now seen corresponding path program 1 times [2020-08-19 00:58:21,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:21,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77615712] [2020-08-19 00:58:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,045 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:58:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:58:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:58:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 00:58:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-19 00:58:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-19 00:58:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-19 00:58:22,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77615712] [2020-08-19 00:58:22,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:58:22,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 00:58:22,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031713996] [2020-08-19 00:58:22,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:58:22,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:22,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:58:22,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:58:22,297 INFO L87 Difference]: Start difference. First operand 2826 states and 3547 transitions. Second operand 14 states. [2020-08-19 00:58:23,317 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:23,576 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:23,819 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:24,334 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:25,696 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:27,808 INFO L93 Difference]: Finished difference Result 5473 states and 7177 transitions. [2020-08-19 00:58:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-19 00:58:27,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2020-08-19 00:58:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:27,825 INFO L225 Difference]: With dead ends: 5473 [2020-08-19 00:58:27,826 INFO L226 Difference]: Without dead ends: 3023 [2020-08-19 00:58:27,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 00:58:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-08-19 00:58:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2680. [2020-08-19 00:58:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2680 states. [2020-08-19 00:58:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3148 transitions. [2020-08-19 00:58:28,476 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3148 transitions. Word has length 164 [2020-08-19 00:58:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:28,477 INFO L479 AbstractCegarLoop]: Abstraction has 2680 states and 3148 transitions. [2020-08-19 00:58:28,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:58:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3148 transitions. [2020-08-19 00:58:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-19 00:58:28,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:28,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 00:58:28,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:58:28,485 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:28,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:28,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2128517555, now seen corresponding path program 1 times [2020-08-19 00:58:28,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:28,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53091128] [2020-08-19 00:58:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,789 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:58:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:58:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 00:58:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 00:58:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-19 00:58:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:28,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 00:58:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-19 00:58:29,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53091128] [2020-08-19 00:58:29,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:58:29,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 00:58:29,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652595772] [2020-08-19 00:58:29,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:58:29,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:29,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:58:29,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:58:29,070 INFO L87 Difference]: Start difference. First operand 2680 states and 3148 transitions. Second operand 10 states. [2020-08-19 00:58:30,147 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:32,304 INFO L93 Difference]: Finished difference Result 3288 states and 4003 transitions. [2020-08-19 00:58:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 00:58:32,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-08-19 00:58:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:32,312 INFO L225 Difference]: With dead ends: 3288 [2020-08-19 00:58:32,313 INFO L226 Difference]: Without dead ends: 1165 [2020-08-19 00:58:32,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 00:58:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-08-19 00:58:32,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 945. [2020-08-19 00:58:32,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2020-08-19 00:58:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1095 transitions. [2020-08-19 00:58:32,515 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1095 transitions. Word has length 170 [2020-08-19 00:58:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:32,516 INFO L479 AbstractCegarLoop]: Abstraction has 945 states and 1095 transitions. [2020-08-19 00:58:32,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:58:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1095 transitions. [2020-08-19 00:58:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-19 00:58:32,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:32,521 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:58:32,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:58:32,522 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:32,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:32,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1897710765, now seen corresponding path program 1 times [2020-08-19 00:58:32,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:32,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847435070] [2020-08-19 00:58:32,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,829 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:58:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:58:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:58:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 00:58:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:58:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:58:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 00:58:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 00:58:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-19 00:58:33,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847435070] [2020-08-19 00:58:33,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:58:33,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 00:58:33,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025854228] [2020-08-19 00:58:33,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 00:58:33,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:33,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 00:58:33,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:58:33,184 INFO L87 Difference]: Start difference. First operand 945 states and 1095 transitions. Second operand 19 states. [2020-08-19 00:58:33,985 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:34,333 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:58:34,590 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:58:34,894 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:58:35,588 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189