/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:59:41,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:59:41,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:59:41,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:59:41,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:59:41,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:59:41,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:59:41,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:59:41,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:59:41,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:59:41,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:59:41,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:59:41,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:59:41,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:59:41,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:59:41,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:59:41,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:59:41,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:59:41,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:59:41,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:59:41,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:59:41,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:59:41,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:59:41,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:59:41,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:59:41,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:59:41,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:59:41,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:59:41,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:59:41,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:59:41,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:59:41,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:59:41,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:59:41,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:59:41,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:59:41,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:59:41,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:59:41,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:59:41,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:59:41,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:59:41,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:59:41,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:59:41,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:59:41,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:59:41,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:59:41,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:59:41,689 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:59:41,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:59:41,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:59:41,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:59:41,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:59:41,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:59:41,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:59:41,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:59:41,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:59:41,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:59:41,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:59:41,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:59:41,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:59:41,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:59:41,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:59:41,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:59:41,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:59:41,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:59:41,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:59:41,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:59:41,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:59:41,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:59:41,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:59:41,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:59:41,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:59:41,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 21:59:41,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:59:41,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:59:41,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:59:42,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:59:42,001 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:59:42,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-21 21:59:42,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f5ceed56/41c1d90579aa4b579ef595ed85498a9e/FLAG6b7ac6545 [2020-08-21 21:59:42,593 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:59:42,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-21 21:59:42,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f5ceed56/41c1d90579aa4b579ef595ed85498a9e/FLAG6b7ac6545 [2020-08-21 21:59:42,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f5ceed56/41c1d90579aa4b579ef595ed85498a9e [2020-08-21 21:59:42,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:59:42,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:59:42,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:59:42,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:59:42,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:59:42,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:59:42" (1/1) ... [2020-08-21 21:59:42,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288b8053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:42, skipping insertion in model container [2020-08-21 21:59:42,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:59:42" (1/1) ... [2020-08-21 21:59:42,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:59:42,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:59:43,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:59:43,431 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:59:43,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:59:43,561 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:59:43,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43 WrapperNode [2020-08-21 21:59:43,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:59:43,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:59:43,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:59:43,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:59:43,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (1/1) ... [2020-08-21 21:59:43,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (1/1) ... [2020-08-21 21:59:43,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (1/1) ... [2020-08-21 21:59:43,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (1/1) ... [2020-08-21 21:59:43,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (1/1) ... [2020-08-21 21:59:43,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (1/1) ... [2020-08-21 21:59:43,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (1/1) ... [2020-08-21 21:59:43,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:59:43,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:59:43,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:59:43,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:59:43,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:59:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:59:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:59:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:59:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:59:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:59:43,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:59:43,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:59:43,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:59:43,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:59:43,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:59:43,732 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:59:43,732 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:59:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:59:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:59:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:59:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:59:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:59:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:59:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:59:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:59:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:59:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:59:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:59:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 21:59:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:59:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:59:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:59:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:59:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:59:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:59:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:59:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:59:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 21:59:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 21:59:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:59:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:59:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:59:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:59:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:59:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:59:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:59:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:59:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:59:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:59:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:59:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:59:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:59:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:59:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:59:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:59:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:59:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:59:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:59:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:59:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:59:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:59:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:59:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:59:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:59:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:59:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:59:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:59:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:59:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:59:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:59:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:59:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:59:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:59:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:59:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:59:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:59:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:59:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:59:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:59:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:59:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:59:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:59:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:59:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:59:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:59:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 21:59:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 21:59:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:59:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:59:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:59:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:59:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:59:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 21:59:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:59:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:59:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:59:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:59:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:59:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:59:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:59:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:59:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:59:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:59:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:59:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:59:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:59:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:59:44,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:59:44,893 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:59:44,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:59:44 BoogieIcfgContainer [2020-08-21 21:59:44,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:59:44,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:59:44,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:59:44,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:59:44,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:59:42" (1/3) ... [2020-08-21 21:59:44,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e852251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:59:44, skipping insertion in model container [2020-08-21 21:59:44,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:43" (2/3) ... [2020-08-21 21:59:44,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e852251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:59:44, skipping insertion in model container [2020-08-21 21:59:44,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:59:44" (3/3) ... [2020-08-21 21:59:44,915 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-21 21:59:44,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:59:44,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:59:44,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:59:44,987 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:59:44,988 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:59:44,988 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:59:44,988 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:59:44,988 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:59:44,988 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:59:44,989 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:59:44,989 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:59:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-21 21:59:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 21:59:45,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:45,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:45,026 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:45,033 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-21 21:59:45,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:45,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994519270] [2020-08-21 21:59:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,734 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:59:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:59:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:45,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994519270] [2020-08-21 21:59:45,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:45,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:59:45,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076938712] [2020-08-21 21:59:45,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:59:45,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:45,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:59:45,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:59:45,858 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-21 21:59:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:47,143 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-21 21:59:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:59:47,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 21:59:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:47,161 INFO L225 Difference]: With dead ends: 353 [2020-08-21 21:59:47,161 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 21:59:47,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:59:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 21:59:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-21 21:59:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-21 21:59:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-21 21:59:47,291 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-21 21:59:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:47,292 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-21 21:59:47,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:59:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-21 21:59:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:59:47,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:47,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:47,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:59:47,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:47,297 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-21 21:59:47,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:47,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100239796] [2020-08-21 21:59:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,638 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:59:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:59:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:47,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100239796] [2020-08-21 21:59:47,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:47,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:59:47,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757563503] [2020-08-21 21:59:47,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:59:47,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:47,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:59:47,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:59:47,699 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-21 21:59:48,157 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:49,304 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-21 21:59:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:59:49,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 21:59:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:49,312 INFO L225 Difference]: With dead ends: 288 [2020-08-21 21:59:49,312 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 21:59:49,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:59:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 21:59:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-21 21:59:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-21 21:59:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-21 21:59:49,369 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-21 21:59:49,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:49,369 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-21 21:59:49,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:59:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-21 21:59:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 21:59:49,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:49,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:49,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:59:49,373 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:49,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:49,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-21 21:59:49,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:49,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279795752] [2020-08-21 21:59:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,707 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:59:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:59:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:49,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279795752] [2020-08-21 21:59:49,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:49,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:59:49,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775940934] [2020-08-21 21:59:49,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:59:49,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:49,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:59:49,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:59:49,843 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-21 21:59:50,249 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:50,575 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:50,806 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:51,058 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:51,854 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:54,219 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-21 21:59:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:59:54,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 21:59:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:54,232 INFO L225 Difference]: With dead ends: 503 [2020-08-21 21:59:54,233 INFO L226 Difference]: Without dead ends: 382 [2020-08-21 21:59:54,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:59:54,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-21 21:59:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-21 21:59:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-21 21:59:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-21 21:59:54,326 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-21 21:59:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:54,326 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-21 21:59:54,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:59:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-21 21:59:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 21:59:54,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:54,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:54,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:59:54,330 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:54,330 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-21 21:59:54,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:54,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783688512] [2020-08-21 21:59:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,638 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:59:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:59:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:59:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:54,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783688512] [2020-08-21 21:59:54,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:54,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:59:54,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646094948] [2020-08-21 21:59:54,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:59:54,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:59:54,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:59:54,780 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-21 21:59:55,103 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:56,102 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:56,556 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:56,793 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:57,033 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:58,916 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-21 21:59:58,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:59:58,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 21:59:58,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:58,926 INFO L225 Difference]: With dead ends: 992 [2020-08-21 21:59:58,926 INFO L226 Difference]: Without dead ends: 711 [2020-08-21 21:59:58,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 21:59:58,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-21 21:59:59,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-21 21:59:59,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-21 21:59:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-21 21:59:59,092 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-21 21:59:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:59,092 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-21 21:59:59,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:59:59,093 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-21 21:59:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 21:59:59,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:59,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:59,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:59:59,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:59,097 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-21 21:59:59,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:59,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265001713] [2020-08-21 21:59:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,360 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:59:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 21:59:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 21:59:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:59,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265001713] [2020-08-21 21:59:59,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:59,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:59:59,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186077340] [2020-08-21 21:59:59,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:59:59,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:59,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:59:59,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:59:59,464 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-21 21:59:59,797 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:00,863 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:01,122 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:01,361 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:02,059 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:03,614 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-21 22:00:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 22:00:03,615 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 22:00:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:03,624 INFO L225 Difference]: With dead ends: 1565 [2020-08-21 22:00:03,624 INFO L226 Difference]: Without dead ends: 1027 [2020-08-21 22:00:03,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:00:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-21 22:00:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-21 22:00:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-21 22:00:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-21 22:00:03,795 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-21 22:00:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:03,796 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-21 22:00:03,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:00:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-21 22:00:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 22:00:03,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:03,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:03,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:00:03,800 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:03,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-21 22:00:03,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:03,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255027877] [2020-08-21 22:00:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,112 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:04,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:00:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:00:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:00:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:00:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:00:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:04,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255027877] [2020-08-21 22:00:04,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:04,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 22:00:04,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724108944] [2020-08-21 22:00:04,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:00:04,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:04,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:00:04,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:00:04,311 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-21 22:00:05,501 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:05,758 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:00:06,022 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:06,337 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:07,844 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-21 22:00:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:00:07,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-21 22:00:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:07,853 INFO L225 Difference]: With dead ends: 1894 [2020-08-21 22:00:07,854 INFO L226 Difference]: Without dead ends: 1101 [2020-08-21 22:00:07,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:00:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-21 22:00:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-21 22:00:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-21 22:00:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-21 22:00:08,120 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-21 22:00:08,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:08,121 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-21 22:00:08,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:00:08,121 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-21 22:00:08,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 22:00:08,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:08,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:08,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:00:08,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:08,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-21 22:00:08,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:08,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563479653] [2020-08-21 22:00:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,417 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:08,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:00:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:00:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:00:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:00:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:00:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:08,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563479653] [2020-08-21 22:00:08,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:08,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:00:08,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763121595] [2020-08-21 22:00:08,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:00:08,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:08,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:00:08,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:00:08,583 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-21 22:00:09,179 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:09,413 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:09,639 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:10,539 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:10,837 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:11,102 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:12,797 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-21 22:00:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:00:12,800 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-21 22:00:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:12,810 INFO L225 Difference]: With dead ends: 1948 [2020-08-21 22:00:12,810 INFO L226 Difference]: Without dead ends: 1129 [2020-08-21 22:00:12,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 22:00:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-21 22:00:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-21 22:00:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-21 22:00:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-21 22:00:12,980 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-21 22:00:12,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:12,981 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-21 22:00:12,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:00:12,981 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-21 22:00:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 22:00:12,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:12,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:12,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:00:12,985 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:12,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-21 22:00:12,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:12,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34745881] [2020-08-21 22:00:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,273 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:13,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:00:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:00:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:00:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:00:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:00:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:13,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34745881] [2020-08-21 22:00:13,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:13,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:00:13,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157653475] [2020-08-21 22:00:13,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:00:13,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:13,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:00:13,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:00:13,463 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-21 22:00:13,796 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:14,366 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:17,576 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-21 22:00:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 22:00:17,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-21 22:00:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:17,591 INFO L225 Difference]: With dead ends: 2919 [2020-08-21 22:00:17,591 INFO L226 Difference]: Without dead ends: 2084 [2020-08-21 22:00:17,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 22:00:17,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-21 22:00:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-21 22:00:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-21 22:00:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-21 22:00:17,999 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-21 22:00:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:17,999 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-21 22:00:18,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:00:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-21 22:00:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:00:18,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:18,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:18,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:00:18,006 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-21 22:00:18,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:18,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048850752] [2020-08-21 22:00:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,258 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:18,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:00:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:00:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:00:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:00:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:00:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:00:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:18,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048850752] [2020-08-21 22:00:18,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:18,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:00:18,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114386135] [2020-08-21 22:00:18,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:00:18,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:18,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:00:18,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:00:18,365 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-21 22:00:18,693 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:22,011 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-21 22:00:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:00:22,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-21 22:00:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:22,038 INFO L225 Difference]: With dead ends: 3491 [2020-08-21 22:00:22,038 INFO L226 Difference]: Without dead ends: 3488 [2020-08-21 22:00:22,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:00:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-21 22:00:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-21 22:00:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-21 22:00:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-21 22:00:22,704 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-21 22:00:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:22,707 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-21 22:00:22,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:00:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-21 22:00:22,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 22:00:22,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:22,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:22,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:00:22,718 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:22,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:22,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1115432797, now seen corresponding path program 1 times [2020-08-21 22:00:22,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:22,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844876111] [2020-08-21 22:00:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,100 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:00:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:00:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:00:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:00:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:00:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:00:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 22:00:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 22:00:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-21 22:00:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 22:00:23,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844876111] [2020-08-21 22:00:23,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:00:23,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 22:00:23,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490513197] [2020-08-21 22:00:23,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:00:23,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:23,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:00:23,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:00:23,351 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 13 states. [2020-08-21 22:00:23,815 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:24,066 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:24,306 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:00:26,034 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:28,251 INFO L93 Difference]: Finished difference Result 5433 states and 7114 transitions. [2020-08-21 22:00:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 22:00:28,252 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-21 22:00:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:28,268 INFO L225 Difference]: With dead ends: 5433 [2020-08-21 22:00:28,269 INFO L226 Difference]: Without dead ends: 2935 [2020-08-21 22:00:28,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 22:00:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-08-21 22:00:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2614. [2020-08-21 22:00:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-08-21 22:00:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3075 transitions. [2020-08-21 22:00:28,750 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3075 transitions. Word has length 162 [2020-08-21 22:00:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:28,751 INFO L479 AbstractCegarLoop]: Abstraction has 2614 states and 3075 transitions. [2020-08-21 22:00:28,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:00:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3075 transitions. [2020-08-21 22:00:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-21 22:00:28,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:28,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 22:00:28,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:00:28,761 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-21 22:00:28,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:28,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908562569] [2020-08-21 22:00:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,053 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:00:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:00:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:00:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:00:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:00:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:00:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 22:00:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 22:00:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-21 22:00:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-21 22:00:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-21 22:00:29,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908562569] [2020-08-21 22:00:29,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:00:29,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:00:29,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466027424] [2020-08-21 22:00:29,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:00:29,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:29,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:00:29,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:00:29,357 INFO L87 Difference]: Start difference. First operand 2614 states and 3075 transitions. Second operand 10 states. [2020-08-21 22:00:30,590 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:32,919 INFO L93 Difference]: Finished difference Result 4369 states and 5351 transitions. [2020-08-21 22:00:32,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-21 22:00:32,919 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-21 22:00:32,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:32,931 INFO L225 Difference]: With dead ends: 4369 [2020-08-21 22:00:32,932 INFO L226 Difference]: Without dead ends: 1783 [2020-08-21 22:00:32,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 22:00:32,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2020-08-21 22:00:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1328. [2020-08-21 22:00:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-08-21 22:00:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1543 transitions. [2020-08-21 22:00:33,223 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1543 transitions. Word has length 171 [2020-08-21 22:00:33,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:33,223 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1543 transitions. [2020-08-21 22:00:33,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:00:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1543 transitions. [2020-08-21 22:00:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-21 22:00:33,228 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:33,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:33,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:00:33,229 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:33,229 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-21 22:00:33,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:33,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113443219] [2020-08-21 22:00:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,510 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:00:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:00:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:00:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:00:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:00:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:00:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 22:00:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 22:00:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:00:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:00:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 22:00:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 22:00:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-21 22:00:33,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113443219] [2020-08-21 22:00:33,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:00:33,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 22:00:33,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289340244] [2020-08-21 22:00:33,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 22:00:33,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:33,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 22:00:33,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:00:33,892 INFO L87 Difference]: Start difference. First operand 1328 states and 1543 transitions. Second operand 19 states. [2020-08-21 22:00:34,414 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:34,740 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:00:35,001 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:00:35,245 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:00:36,010 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:36,718 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:37,131 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:39,572 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:39,841 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:40,193 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:40,446 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:40,716 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:40,987 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:41,273 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:41,549 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191