/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:47:43,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:47:43,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:47:43,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:47:43,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:47:43,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:47:43,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:47:43,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:47:43,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:47:43,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:47:43,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:47:43,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:47:43,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:47:43,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:47:43,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:47:43,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:47:43,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:47:43,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:47:43,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:47:43,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:47:43,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:47:43,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:47:43,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:47:43,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:47:43,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:47:43,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:47:43,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:47:43,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:47:43,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:47:43,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:47:43,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:47:43,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:47:43,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:47:43,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:47:43,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:47:43,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:47:43,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:47:43,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:47:43,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:47:43,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:47:43,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:47:43,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:47:43,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:47:43,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:47:43,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:47:43,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:47:43,712 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:47:43,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:47:43,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:47:43,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:47:43,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:47:43,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:47:43,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:47:43,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:47:43,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:47:43,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:47:43,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:47:43,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:47:43,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:47:43,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:47:43,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:47:43,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:47:43,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:47:43,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:47:43,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:47:43,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:47:43,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:47:43,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:47:43,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:47:43,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:47:43,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:47:43,720 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:47:44,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:47:44,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:47:44,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:47:44,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:47:44,070 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:47:44,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-18 21:47:44,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74388c0b1/1587a35688a741ab88cddeb6e263abb2/FLAGd66764ff3 [2020-08-18 21:47:44,643 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:47:44,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-18 21:47:44,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74388c0b1/1587a35688a741ab88cddeb6e263abb2/FLAGd66764ff3 [2020-08-18 21:47:44,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74388c0b1/1587a35688a741ab88cddeb6e263abb2 [2020-08-18 21:47:44,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:47:44,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:47:44,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:47:44,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:47:44,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:47:44,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:47:44" (1/1) ... [2020-08-18 21:47:44,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff1ef1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:44, skipping insertion in model container [2020-08-18 21:47:44,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:47:44" (1/1) ... [2020-08-18 21:47:44,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:47:45,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:47:45,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:47:45,460 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:47:45,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:47:45,625 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:47:45,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45 WrapperNode [2020-08-18 21:47:45,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:47:45,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:47:45,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:47:45,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:47:45,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (1/1) ... [2020-08-18 21:47:45,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (1/1) ... [2020-08-18 21:47:45,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (1/1) ... [2020-08-18 21:47:45,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (1/1) ... [2020-08-18 21:47:45,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (1/1) ... [2020-08-18 21:47:45,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (1/1) ... [2020-08-18 21:47:45,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (1/1) ... [2020-08-18 21:47:45,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:47:45,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:47:45,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:47:45,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:47:45,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:47:45,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:47:45,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:47:45,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:47:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:47:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:47:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:47:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:47:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:47:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:47:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 21:47:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:47:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:47:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:47:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:47:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:47:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:47:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:47:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:47:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:47:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:47:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:47:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:47:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:47:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:47:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:47:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:47:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:47:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:47:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:47:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:47:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:47:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:47:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:47:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:47:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:47:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:47:45,848 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:47:45,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:47:45,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:47:45,848 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 21:47:45,849 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:47:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:47:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:47:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:47:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:47:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:47:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:47:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:47:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:47:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:47:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:47:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:47:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:47:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:47:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:47:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:47:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:47:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:47:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:47:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:47:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:47:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:47:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:47:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:47:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 21:47:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:47:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:47:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:47:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:47:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:47:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:47:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:47:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:47:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:47:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:47:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:47:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:47:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:47:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:47:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:47:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:47:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:47:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:47:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:47:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:47:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:47:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 21:47:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:47:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:47:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:47:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:47:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:47:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:47:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:47:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:47:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:47:46,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:47:46,998 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:47:47,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:47:47 BoogieIcfgContainer [2020-08-18 21:47:47,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:47:47,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:47:47,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:47:47,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:47:47,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:47:44" (1/3) ... [2020-08-18 21:47:47,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf43cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:47:47, skipping insertion in model container [2020-08-18 21:47:47,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:45" (2/3) ... [2020-08-18 21:47:47,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf43cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:47:47, skipping insertion in model container [2020-08-18 21:47:47,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:47:47" (3/3) ... [2020-08-18 21:47:47,013 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-18 21:47:47,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:47:47,032 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:47:47,045 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:47:47,071 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:47:47,071 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:47:47,071 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:47:47,072 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:47:47,072 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:47:47,072 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:47:47,072 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:47:47,073 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:47:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-18 21:47:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 21:47:47,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:47,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:47,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:47,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-18 21:47:47,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:47,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162892200] [2020-08-18 21:47:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:47,892 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:47,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:47,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:47,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:47:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:47:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:48,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162892200] [2020-08-18 21:47:48,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:48,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:47:48,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70088856] [2020-08-18 21:47:48,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:47:48,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:48,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:47:48,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:47:48,039 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-18 21:47:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:49,189 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-18 21:47:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:47:49,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 21:47:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:49,208 INFO L225 Difference]: With dead ends: 306 [2020-08-18 21:47:49,208 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 21:47:49,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:47:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 21:47:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-18 21:47:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 21:47:49,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-18 21:47:49,330 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-18 21:47:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:49,331 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-18 21:47:49,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:47:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-18 21:47:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 21:47:49,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:49,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:49,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:47:49,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-18 21:47:49,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:49,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797288754] [2020-08-18 21:47:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:49,693 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:49,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:49,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:49,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:47:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:47:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:49,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797288754] [2020-08-18 21:47:49,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:49,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:47:49,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365683473] [2020-08-18 21:47:49,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:47:49,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:49,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:47:49,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:47:49,768 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-18 21:47:50,167 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:50,989 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-18 21:47:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:47:50,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 21:47:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:50,993 INFO L225 Difference]: With dead ends: 235 [2020-08-18 21:47:50,994 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 21:47:50,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:47:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 21:47:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 21:47:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 21:47:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-18 21:47:51,036 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-18 21:47:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:51,037 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-18 21:47:51,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:47:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-18 21:47:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 21:47:51,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:51,039 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 21:47:51,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:47:51,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-18 21:47:51,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:51,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514362857] [2020-08-18 21:47:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:51,366 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:51,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:51,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:51,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:47:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:47:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:51,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514362857] [2020-08-18 21:47:51,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:51,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:47:51,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207810686] [2020-08-18 21:47:51,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:47:51,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:51,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:47:51,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:47:51,468 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-18 21:47:51,787 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:52,092 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:52,370 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:52,612 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:53,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:53,765 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-18 21:47:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:47:53,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 21:47:53,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:53,769 INFO L225 Difference]: With dead ends: 248 [2020-08-18 21:47:53,769 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 21:47:53,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:47:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 21:47:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 21:47:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 21:47:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-18 21:47:53,805 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-18 21:47:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:53,805 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-18 21:47:53,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:47:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-18 21:47:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 21:47:53,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:53,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:53,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:47:53,809 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:53,809 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-18 21:47:53,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:53,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456712989] [2020-08-18 21:47:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,055 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:47:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 21:47:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 21:47:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:54,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456712989] [2020-08-18 21:47:54,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:54,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:47:54,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314580788] [2020-08-18 21:47:54,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:47:54,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:54,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:47:54,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:47:54,143 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-18 21:47:54,470 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:55,532 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:56,151 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-18 21:47:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:47:56,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 21:47:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:56,155 INFO L225 Difference]: With dead ends: 345 [2020-08-18 21:47:56,156 INFO L226 Difference]: Without dead ends: 246 [2020-08-18 21:47:56,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:47:56,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-18 21:47:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-18 21:47:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-18 21:47:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-18 21:47:56,220 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-18 21:47:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:56,221 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-18 21:47:56,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:47:56,221 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-18 21:47:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 21:47:56,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:56,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:56,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:47:56,224 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:56,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:56,224 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-18 21:47:56,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:56,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487292376] [2020-08-18 21:47:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,531 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:47:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:47:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:47:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:47:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 21:47:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 21:47:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:56,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487292376] [2020-08-18 21:47:56,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:56,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:47:56,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334543611] [2020-08-18 21:47:56,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:47:56,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:56,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:47:56,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:47:56,656 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-18 21:47:57,103 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:47:57,403 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:57,654 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:57,907 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:58,491 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:59,354 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:47:59,657 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:47:59,912 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:00,143 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:00,399 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:00,644 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:01,918 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:02,269 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:02,907 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-18 21:48:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:48:02,908 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 21:48:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:02,916 INFO L225 Difference]: With dead ends: 713 [2020-08-18 21:48:02,916 INFO L226 Difference]: Without dead ends: 534 [2020-08-18 21:48:02,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 21:48:02,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-18 21:48:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-18 21:48:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-18 21:48:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-18 21:48:03,028 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-18 21:48:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:03,028 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-18 21:48:03,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:48:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-18 21:48:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 21:48:03,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:03,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:03,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:48:03,034 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:03,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-18 21:48:03,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:03,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058034889] [2020-08-18 21:48:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,366 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:48:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 21:48:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 21:48:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 21:48:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 21:48:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 21:48:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 21:48:03,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058034889] [2020-08-18 21:48:03,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:03,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:48:03,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293325331] [2020-08-18 21:48:03,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:48:03,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:03,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:48:03,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:48:03,610 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-18 21:48:04,085 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:04,741 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:05,322 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:05,594 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:48:05,871 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:06,126 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:06,387 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:06,693 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:48:06,993 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:07,266 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:08,840 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:09,089 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:48:09,333 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:09,579 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:10,027 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-18 21:48:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 21:48:10,028 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-18 21:48:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:10,035 INFO L225 Difference]: With dead ends: 957 [2020-08-18 21:48:10,035 INFO L226 Difference]: Without dead ends: 509 [2020-08-18 21:48:10,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 21:48:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-18 21:48:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-18 21:48:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 21:48:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-18 21:48:10,114 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-18 21:48:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:10,115 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-18 21:48:10,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:48:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-18 21:48:10,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 21:48:10,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:10,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:10,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:48:10,118 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:10,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-18 21:48:10,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:10,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223345235] [2020-08-18 21:48:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,415 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:10,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:48:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:48:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 21:48:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 21:48:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 21:48:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 21:48:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 21:48:10,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223345235] [2020-08-18 21:48:10,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:10,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 21:48:10,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518443702] [2020-08-18 21:48:10,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:48:10,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:10,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:48:10,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:48:10,607 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-18 21:48:11,096 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:11,339 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:11,563 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:12,154 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:12,396 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:12,635 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:13,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:13,551 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-18 21:48:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:48:13,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-18 21:48:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:13,557 INFO L225 Difference]: With dead ends: 807 [2020-08-18 21:48:13,557 INFO L226 Difference]: Without dead ends: 389 [2020-08-18 21:48:13,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:48:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-18 21:48:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-18 21:48:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-18 21:48:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-18 21:48:13,628 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-18 21:48:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:13,628 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-18 21:48:13,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:48:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-18 21:48:13,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 21:48:13,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:13,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:13,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:48:13,632 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:13,632 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-18 21:48:13,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:13,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168000350] [2020-08-18 21:48:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,885 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:48:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 21:48:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 21:48:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 21:48:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 21:48:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 21:48:14,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168000350] [2020-08-18 21:48:14,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:14,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:48:14,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736941051] [2020-08-18 21:48:14,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:48:14,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:14,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:48:14,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:48:14,037 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-18 21:48:15,306 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:15,524 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:15,766 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:16,009 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:16,365 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-18 21:48:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:48:16,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-18 21:48:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:16,372 INFO L225 Difference]: With dead ends: 670 [2020-08-18 21:48:16,372 INFO L226 Difference]: Without dead ends: 394 [2020-08-18 21:48:16,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:48:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-18 21:48:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-18 21:48:16,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 21:48:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-18 21:48:16,444 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-18 21:48:16,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:16,444 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-18 21:48:16,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:48:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-18 21:48:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 21:48:16,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:16,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:16,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:48:16,447 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:16,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:16,448 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-18 21:48:16,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:16,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931954569] [2020-08-18 21:48:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,767 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:48:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 21:48:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 21:48:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 21:48:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 21:48:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 21:48:16,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931954569] [2020-08-18 21:48:16,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:16,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:48:16,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050742678] [2020-08-18 21:48:16,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:48:16,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:16,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:48:16,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:48:16,917 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-18 21:48:17,478 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:19,124 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:19,401 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:19,651 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:19,887 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:20,174 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:20,523 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-18 21:48:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:48:20,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-18 21:48:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:20,528 INFO L225 Difference]: With dead ends: 401 [2020-08-18 21:48:20,529 INFO L226 Difference]: Without dead ends: 398 [2020-08-18 21:48:20,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:48:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-18 21:48:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-18 21:48:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 21:48:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-18 21:48:20,593 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-18 21:48:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:20,594 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-18 21:48:20,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:48:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-18 21:48:20,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 21:48:20,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:20,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:20,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:48:20,597 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:20,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:20,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-18 21:48:20,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:20,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437806588] [2020-08-18 21:48:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:20,968 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:20,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:20,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:20,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:48:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 21:48:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 21:48:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 21:48:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 21:48:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 21:48:21,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437806588] [2020-08-18 21:48:21,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:21,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 21:48:21,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794523175] [2020-08-18 21:48:21,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:48:21,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:21,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:48:21,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:48:21,241 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-18 21:48:21,691 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:22,531 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:23,057 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:23,348 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:23,596 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:23,847 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:24,148 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:24,406 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:25,941 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:26,194 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:26,877 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-18 21:48:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 21:48:26,878 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-18 21:48:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:26,882 INFO L225 Difference]: With dead ends: 881 [2020-08-18 21:48:26,882 INFO L226 Difference]: Without dead ends: 600 [2020-08-18 21:48:26,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 21:48:26,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-18 21:48:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-18 21:48:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-18 21:48:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-18 21:48:26,961 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-18 21:48:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:26,962 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-18 21:48:26,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:48:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-18 21:48:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-18 21:48:26,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:26,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:26,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:48:26,967 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:26,967 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-18 21:48:26,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:26,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897265123] [2020-08-18 21:48:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,275 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:27,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:48:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:48:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:48:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 21:48:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 21:48:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-18 21:48:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-18 21:48:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-18 21:48:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 21:48:27,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897265123] [2020-08-18 21:48:27,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:27,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 21:48:27,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893592104] [2020-08-18 21:48:27,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 21:48:27,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 21:48:27,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:48:27,587 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-18 21:48:28,104 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:28,741 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:29,627 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:29,919 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:30,150 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:30,384 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:30,670 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:30,920 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:32,165 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:32,429 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:33,563 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-18 21:48:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 21:48:33,564 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-18 21:48:33,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:33,570 INFO L225 Difference]: With dead ends: 1240 [2020-08-18 21:48:33,570 INFO L226 Difference]: Without dead ends: 814 [2020-08-18 21:48:33,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 21:48:33,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-18 21:48:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-18 21:48:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-18 21:48:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-18 21:48:33,719 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-18 21:48:33,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:33,720 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-18 21:48:33,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 21:48:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-18 21:48:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 21:48:33,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:33,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:33,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:48:33,724 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:33,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-18 21:48:33,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:33,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132267557] [2020-08-18 21:48:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,088 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:34,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:48:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:48:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:48:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 21:48:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:48:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 21:48:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:48:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 21:48:34,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132267557] [2020-08-18 21:48:34,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:34,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:48:34,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290361591] [2020-08-18 21:48:34,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:48:34,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:34,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:48:34,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:48:34,377 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-18 21:48:35,394 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:35,650 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:37,107 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:48:37,356 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:37,577 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:37,989 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-18 21:48:39,572 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 21:48:39,838 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:48:40,143 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:48:40,407 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:48:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:41,508 INFO L93 Difference]: Finished difference Result 1408 states and 1753 transitions. [2020-08-18 21:48:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 21:48:41,508 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-18 21:48:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:41,514 INFO L225 Difference]: With dead ends: 1408 [2020-08-18 21:48:41,514 INFO L226 Difference]: Without dead ends: 982 [2020-08-18 21:48:41,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 21:48:41,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-08-18 21:48:41,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 833. [2020-08-18 21:48:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-08-18 21:48:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 968 transitions. [2020-08-18 21:48:41,687 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 968 transitions. Word has length 192 [2020-08-18 21:48:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:41,688 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 968 transitions. [2020-08-18 21:48:41,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:48:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 968 transitions. [2020-08-18 21:48:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 21:48:41,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:41,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:41,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:48:41,692 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1185901215, now seen corresponding path program 1 times [2020-08-18 21:48:41,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:41,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080594584] [2020-08-18 21:48:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,023 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:48:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:48:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:48:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 21:48:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:48:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 21:48:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:48:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-18 21:48:42,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080594584] [2020-08-18 21:48:42,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:42,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:48:42,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802747141] [2020-08-18 21:48:42,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:48:42,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:42,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:48:42,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:48:42,325 INFO L87 Difference]: Start difference. First operand 833 states and 968 transitions. Second operand 13 states. [2020-08-18 21:48:42,810 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:43,050 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:43,288 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187