/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=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:20:18,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:20:18,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:20:18,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:20:18,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:20:18,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:20:18,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:20:18,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:20:18,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:20:18,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:20:18,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:20:18,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:20:18,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:20:18,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:20:18,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:20:18,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:20:18,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:20:18,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:20:18,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:20:18,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:20:18,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:20:18,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:20:18,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:20:18,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:20:18,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:20:18,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:20:18,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:20:18,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:20:18,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:20:18,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:20:18,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:20:18,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:20:18,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:20:18,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:20:18,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:20:18,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:20:18,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:20:18,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:20:18,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:20:18,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:20:18,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:20:18,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:20:18,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:20:18,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:20:18,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:20:18,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:20:18,713 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:20:18,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:20:18,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:20:18,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:20:18,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:20:18,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:20:18,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:20:18,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:20:18,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:20:18,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:20:18,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:20:18,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:20:18,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:20:18,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:20:18,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:20:18,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:20:18,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:20:18,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:20:18,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:20:18,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:20:18,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:20:18,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:20:18,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:20:18,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:20:18,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:20:18,720 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:20:19,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:20:19,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:20:19,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:20:19,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:20:19,048 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:20:19,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-18 23:20:19,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3397ca070/70fe07f821864a1783bb6c3773a5a0ad/FLAGdce37a172 [2020-08-18 23:20:19,723 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:20:19,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-18 23:20:19,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3397ca070/70fe07f821864a1783bb6c3773a5a0ad/FLAGdce37a172 [2020-08-18 23:20:19,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3397ca070/70fe07f821864a1783bb6c3773a5a0ad [2020-08-18 23:20:19,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:20:19,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:20:19,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:20:19,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:20:19,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:20:19,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:20:19" (1/1) ... [2020-08-18 23:20:19,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:19, skipping insertion in model container [2020-08-18 23:20:19,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:20:19" (1/1) ... [2020-08-18 23:20:19,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:20:20,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:20:20,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:20:20,538 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:20:20,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:20:20,696 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:20:20,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20 WrapperNode [2020-08-18 23:20:20,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:20:20,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:20:20,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:20:20,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:20:20,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (1/1) ... [2020-08-18 23:20:20,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (1/1) ... [2020-08-18 23:20:20,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (1/1) ... [2020-08-18 23:20:20,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (1/1) ... [2020-08-18 23:20:20,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (1/1) ... [2020-08-18 23:20:20,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (1/1) ... [2020-08-18 23:20:20,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (1/1) ... [2020-08-18 23:20:20,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:20:20,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:20:20,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:20:20,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:20:20,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:20:20,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:20:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:20:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:20:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:20:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:20:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:20:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:20:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:20:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:20:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:20:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:20:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:20:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 23:20:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 23:20:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:20:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:20:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:20:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:20:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:20:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:20:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:20:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 23:20:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:20:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:20:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:20:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:20:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:20:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:20:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:20:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:20:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:20:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:20:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 23:20:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 23:20:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:20:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:20:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:20:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:20:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:20:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:20:20,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:20:20,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:20:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:20:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:20:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:20:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:20:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:20:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:20:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:20:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:20:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:20:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:20:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:20:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:20:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:20:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:20:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 23:20:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:20:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:20:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:20:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:20:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:20:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:20:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 23:20:20,851 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:20:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:20:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:20:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:20:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 23:20:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:20:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:20:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:20:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 23:20:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:20:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:20:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:20:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:20:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 23:20:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:20:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:20:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:20:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:20:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:20:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:20:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:20:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:20:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:20:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:20:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:20:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:20:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:20:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:20:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:20:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:20:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:20:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:20:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:20:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:20:21,967 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:20:21,968 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:20:21,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:20:21 BoogieIcfgContainer [2020-08-18 23:20:21,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:20:21,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:20:21,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:20:21,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:20:21,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:20:19" (1/3) ... [2020-08-18 23:20:21,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bb701a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:20:21, skipping insertion in model container [2020-08-18 23:20:21,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:20" (2/3) ... [2020-08-18 23:20:21,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bb701a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:20:21, skipping insertion in model container [2020-08-18 23:20:21,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:20:21" (3/3) ... [2020-08-18 23:20:21,982 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2020-08-18 23:20:21,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:20:22,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:20:22,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:20:22,040 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:20:22,040 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:20:22,040 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:20:22,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:20:22,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:20:22,041 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:20:22,041 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:20:22,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:20:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-18 23:20:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 23:20:22,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:22,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:22,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:22,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2020-08-18 23:20:22,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:22,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027966667] [2020-08-18 23:20:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,792 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:20:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:20:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:22,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027966667] [2020-08-18 23:20:22,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:22,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:20:22,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044737408] [2020-08-18 23:20:22,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:20:22,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:20:22,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:20:22,933 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-18 23:20:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:24,223 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2020-08-18 23:20:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:20:24,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 23:20:24,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:24,242 INFO L225 Difference]: With dead ends: 306 [2020-08-18 23:20:24,242 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 23:20:24,247 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 [2020-08-18 23:20:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 23:20:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2020-08-18 23:20:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-18 23:20:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-18 23:20:24,351 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2020-08-18 23:20:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:24,352 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-18 23:20:24,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:20:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-18 23:20:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:20:24,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:24,356 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] [2020-08-18 23:20:24,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:20:24,357 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2020-08-18 23:20:24,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:24,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242337163] [2020-08-18 23:20:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,748 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:20:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:20:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:24,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242337163] [2020-08-18 23:20:24,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:24,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:20:24,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278403475] [2020-08-18 23:20:24,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:20:24,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:24,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:20:24,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:20:24,815 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2020-08-18 23:20:25,349 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:26,346 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2020-08-18 23:20:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 23:20:26,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 23:20:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:26,351 INFO L225 Difference]: With dead ends: 247 [2020-08-18 23:20:26,351 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 23:20:26,353 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 [2020-08-18 23:20:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 23:20:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-18 23:20:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 23:20:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-18 23:20:26,397 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2020-08-18 23:20:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:26,398 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-18 23:20:26,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:20:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-18 23:20:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 23:20:26,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:26,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:26,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:20:26,401 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:26,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:26,402 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2020-08-18 23:20:26,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:26,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281725323] [2020-08-18 23:20:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,744 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:26,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:20:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 23:20:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:26,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281725323] [2020-08-18 23:20:26,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:26,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:20:26,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610395107] [2020-08-18 23:20:26,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:20:26,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:26,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:20:26,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:20:26,899 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2020-08-18 23:20:27,282 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:27,633 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:27,884 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:28,130 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:29,374 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2020-08-18 23:20:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:20:29,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 23:20:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:29,377 INFO L225 Difference]: With dead ends: 260 [2020-08-18 23:20:29,378 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 23:20:29,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:20:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 23:20:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-18 23:20:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 23:20:29,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-18 23:20:29,417 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2020-08-18 23:20:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:29,418 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-18 23:20:29,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:20:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-18 23:20:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 23:20:29,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:29,421 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] [2020-08-18 23:20:29,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:20:29,421 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:29,422 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2020-08-18 23:20:29,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:29,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037792747] [2020-08-18 23:20:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,790 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:29,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:20:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 23:20:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:20:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:29,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037792747] [2020-08-18 23:20:29,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:29,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 23:20:29,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022946061] [2020-08-18 23:20:29,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:20:29,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:29,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:20:29,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:20:29,891 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2020-08-18 23:20:30,256 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:31,465 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:32,227 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2020-08-18 23:20:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:20:32,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-18 23:20:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:32,230 INFO L225 Difference]: With dead ends: 359 [2020-08-18 23:20:32,231 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 23:20:32,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:20:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 23:20:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2020-08-18 23:20:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-18 23:20:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2020-08-18 23:20:32,286 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2020-08-18 23:20:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:32,287 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2020-08-18 23:20:32,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:20:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2020-08-18 23:20:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 23:20:32,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:32,289 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] [2020-08-18 23:20:32,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:20:32,289 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:32,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:32,290 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2020-08-18 23:20:32,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:32,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870408602] [2020-08-18 23:20:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,581 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:32,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:20:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 23:20:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 23:20:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:32,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870408602] [2020-08-18 23:20:32,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:32,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:20:32,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027873464] [2020-08-18 23:20:32,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:20:32,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:32,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:20:32,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:20:32,761 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2020-08-18 23:20:33,213 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:34,393 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:34,651 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:34,884 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:35,131 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:36,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:36,370 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2020-08-18 23:20:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 23:20:36,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 23:20:36,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:36,374 INFO L225 Difference]: With dead ends: 626 [2020-08-18 23:20:36,374 INFO L226 Difference]: Without dead ends: 444 [2020-08-18 23:20:36,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 23:20:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-08-18 23:20:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2020-08-18 23:20:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 23:20:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2020-08-18 23:20:36,463 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2020-08-18 23:20:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:36,464 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2020-08-18 23:20:36,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:20:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2020-08-18 23:20:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 23:20:36,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:36,466 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] [2020-08-18 23:20:36,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:20:36,467 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:36,467 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2020-08-18 23:20:36,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:36,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487354490] [2020-08-18 23:20:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,845 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:20:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 23:20:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 23:20:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:36,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487354490] [2020-08-18 23:20:36,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:36,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:20:36,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874363782] [2020-08-18 23:20:36,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:20:36,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:20:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:20:36,972 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2020-08-18 23:20:37,343 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:38,476 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:38,738 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:38,984 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:39,267 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:40,235 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2020-08-18 23:20:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 23:20:40,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 23:20:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:40,241 INFO L225 Difference]: With dead ends: 822 [2020-08-18 23:20:40,241 INFO L226 Difference]: Without dead ends: 482 [2020-08-18 23:20:40,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 23:20:40,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-18 23:20:40,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2020-08-18 23:20:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-18 23:20:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-18 23:20:40,324 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2020-08-18 23:20:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:40,324 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-18 23:20:40,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:20:40,325 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-18 23:20:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 23:20:40,326 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:40,326 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] [2020-08-18 23:20:40,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:20:40,327 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:40,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2020-08-18 23:20:40,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:40,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178752087] [2020-08-18 23:20:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,576 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:40,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:20:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:20:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:20:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:40,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178752087] [2020-08-18 23:20:40,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:40,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:20:40,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108324694] [2020-08-18 23:20:40,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:20:40,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:40,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:20:40,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:20:40,735 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2020-08-18 23:20:41,706 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:41,940 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:20:42,202 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:42,427 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:43,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:43,543 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2020-08-18 23:20:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:20:43,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-18 23:20:43,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:43,547 INFO L225 Difference]: With dead ends: 825 [2020-08-18 23:20:43,547 INFO L226 Difference]: Without dead ends: 486 [2020-08-18 23:20:43,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:20:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-18 23:20:43,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2020-08-18 23:20:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-08-18 23:20:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2020-08-18 23:20:43,621 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2020-08-18 23:20:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:43,622 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2020-08-18 23:20:43,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:20:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2020-08-18 23:20:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 23:20:43,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:43,624 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] [2020-08-18 23:20:43,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:20:43,624 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:43,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2020-08-18 23:20:43,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:43,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073606369] [2020-08-18 23:20:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,887 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:43,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:20:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:20:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:20:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:44,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073606369] [2020-08-18 23:20:44,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:44,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:20:44,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9676382] [2020-08-18 23:20:44,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:20:44,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:44,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:20:44,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:20:44,057 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2020-08-18 23:20:45,382 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:45,608 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:45,835 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:46,509 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:46,781 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:47,036 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:48,284 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2020-08-18 23:20:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:20:48,285 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-18 23:20:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:48,290 INFO L225 Difference]: With dead ends: 849 [2020-08-18 23:20:48,290 INFO L226 Difference]: Without dead ends: 500 [2020-08-18 23:20:48,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:20:48,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-18 23:20:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-18 23:20:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 23:20:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2020-08-18 23:20:48,374 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2020-08-18 23:20:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:48,375 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2020-08-18 23:20:48,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:20:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2020-08-18 23:20:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 23:20:48,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:48,376 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] [2020-08-18 23:20:48,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:20:48,377 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:48,377 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2020-08-18 23:20:48,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:48,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969984271] [2020-08-18 23:20:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,719 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:20:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:20:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:20:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:48,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969984271] [2020-08-18 23:20:48,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:48,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:20:48,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569489394] [2020-08-18 23:20:48,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:20:48,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:48,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:20:48,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:20:48,933 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2020-08-18 23:20:49,498 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:50,010 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:52,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:52,440 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2020-08-18 23:20:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 23:20:52,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 23:20:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:52,449 INFO L225 Difference]: With dead ends: 1197 [2020-08-18 23:20:52,449 INFO L226 Difference]: Without dead ends: 840 [2020-08-18 23:20:52,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 23:20:52,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-08-18 23:20:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2020-08-18 23:20:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-08-18 23:20:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2020-08-18 23:20:52,602 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2020-08-18 23:20:52,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:52,604 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2020-08-18 23:20:52,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:20:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2020-08-18 23:20:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 23:20:52,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:52,607 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] [2020-08-18 23:20:52,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:20:52,607 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:52,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:52,607 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2020-08-18 23:20:52,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:52,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912809422] [2020-08-18 23:20:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,911 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:52,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:20:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:20:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 23:20:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:53,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:53,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 23:20:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 23:20:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:53,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912809422] [2020-08-18 23:20:53,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:53,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:20:53,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286032766] [2020-08-18 23:20:53,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:20:53,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:53,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:20:53,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:20:53,062 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2020-08-18 23:20:53,680 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:56,496 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2020-08-18 23:20:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 23:20:56,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 23:20:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:56,506 INFO L225 Difference]: With dead ends: 1377 [2020-08-18 23:20:56,506 INFO L226 Difference]: Without dead ends: 1374 [2020-08-18 23:20:56,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 23:20:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-08-18 23:20:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2020-08-18 23:20:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-08-18 23:20:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2020-08-18 23:20:56,724 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2020-08-18 23:20:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:56,724 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2020-08-18 23:20:56,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:20:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2020-08-18 23:20:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 23:20:56,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:56,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:56,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:20:56,730 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:56,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:56,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2020-08-18 23:20:56,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:56,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425769211] [2020-08-18 23:20:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,056 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:57,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:20:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:20:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:20:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:20:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:20:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:20:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 23:20:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 23:20:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 23:20:57,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425769211] [2020-08-18 23:20:57,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:20:57,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 23:20:57,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809602498] [2020-08-18 23:20:57,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:20:57,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:20:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:20:57,314 INFO L87 Difference]: Start difference. First operand 1147 states and 1356 transitions. Second operand 13 states. [2020-08-18 23:20:58,100 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:58,344 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:58,590 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:59,573 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:01,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:01,512 INFO L93 Difference]: Finished difference Result 2071 states and 2568 transitions. [2020-08-18 23:21:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 23:21:01,513 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 23:21:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:01,521 INFO L225 Difference]: With dead ends: 2071 [2020-08-18 23:21:01,521 INFO L226 Difference]: Without dead ends: 1084 [2020-08-18 23:21:01,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 23:21:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-18 23:21:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 948. [2020-08-18 23:21:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-18 23:21:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1106 transitions. [2020-08-18 23:21:01,694 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1106 transitions. Word has length 152 [2020-08-18 23:21:01,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:01,697 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1106 transitions. [2020-08-18 23:21:01,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:21:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1106 transitions. [2020-08-18 23:21:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 23:21:01,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:01,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:21:01,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:21:01,702 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:01,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:01,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1764550393, now seen corresponding path program 1 times [2020-08-18 23:21:01,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:01,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171146062] [2020-08-18 23:21:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,135 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:02,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:21:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:21:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:21:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:21:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:21:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 23:21:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 23:21:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:21:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 23:21:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 23:21:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 23:21:02,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171146062] [2020-08-18 23:21:02,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:21:02,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 23:21:02,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893324562] [2020-08-18 23:21:02,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:21:02,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:02,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:21:02,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:21:02,460 INFO L87 Difference]: Start difference. First operand 948 states and 1106 transitions. Second operand 15 states. [2020-08-18 23:21:03,138 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:04,237 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:06,434 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 23:21:06,939 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 23:21:07,420 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 23:21:08,372 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 23:21:08,640 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:21:08,896 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:21:09,125 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:10,818 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 23:21:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:11,860 INFO L93 Difference]: Finished difference Result 3031 states and 3876 transitions. [2020-08-18 23:21:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-08-18 23:21:11,861 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-18 23:21:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:11,874 INFO L225 Difference]: With dead ends: 3031 [2020-08-18 23:21:11,874 INFO L226 Difference]: Without dead ends: 2243 [2020-08-18 23:21:11,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2020-08-18 23:21:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-08-18 23:21:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1920. [2020-08-18 23:21:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-08-18 23:21:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2261 transitions. [2020-08-18 23:21:12,333 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2261 transitions. Word has length 154 [2020-08-18 23:21:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:12,334 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2261 transitions. [2020-08-18 23:21:12,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 23:21:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2261 transitions. [2020-08-18 23:21:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 23:21:12,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:12,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:21:12,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:21:12,338 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:12,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1836936951, now seen corresponding path program 1 times [2020-08-18 23:21:12,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:12,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075820274] [2020-08-18 23:21:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,639 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:21:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:21:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:21:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:21:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:21:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 23:21:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 23:21:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:21:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 23:21:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 23:21:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-18 23:21:12,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075820274] [2020-08-18 23:21:12,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:21:12,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 23:21:12,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274583725] [2020-08-18 23:21:12,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:21:12,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:12,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:21:12,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:21:12,965 INFO L87 Difference]: Start difference. First operand 1920 states and 2261 transitions. Second operand 15 states. [2020-08-18 23:21:13,598 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:21:13,857 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:14,084 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:15,952 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:16,212 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:21:16,495 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:21:16,743 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191