/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:55:19,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:55:19,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:55:19,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:55:19,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:55:19,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:55:19,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:55:19,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:55:19,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:55:19,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:55:19,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:55:19,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:55:19,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:55:19,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:55:19,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:55:19,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:55:19,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:55:19,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:55:19,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:55:19,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:55:19,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:55:19,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:55:19,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:55:19,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:55:19,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:55:19,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:55:19,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:55:19,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:55:19,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:55:19,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:55:19,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:55:19,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:55:19,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:55:19,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:55:19,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:55:19,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:55:19,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:55:19,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:55:19,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:55:19,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:55:19,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:55:19,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:55:19,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:55:19,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:55:19,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:55:19,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:55:19,583 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:55:19,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:55:19,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:55:19,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:55:19,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:55:19,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:55:19,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:55:19,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:55:19,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:55:19,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:55:19,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:55:19,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:55:19,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:55:19,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:55:19,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:55:19,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:55:19,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:55:19,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:55:19,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:55:19,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:55:19,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:55:19,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:55:19,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:55:19,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:55:19,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:55:19,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:55:19,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:55:19,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:55:19,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:55:19,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:55:19,904 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:55:19,904 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 16:55:19,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab31b156/32b68bd08c0a4a15892bac552ca9d1ec/FLAGea8e84a67 [2020-08-18 16:55:20,508 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:55:20,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 16:55:20,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab31b156/32b68bd08c0a4a15892bac552ca9d1ec/FLAGea8e84a67 [2020-08-18 16:55:20,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab31b156/32b68bd08c0a4a15892bac552ca9d1ec [2020-08-18 16:55:20,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:55:20,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:55:20,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:55:20,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:55:20,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:55:20,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:55:20" (1/1) ... [2020-08-18 16:55:20,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b1378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:20, skipping insertion in model container [2020-08-18 16:55:20,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:55:20" (1/1) ... [2020-08-18 16:55:20,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:55:20,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:55:21,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:55:21,400 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:55:21,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:55:21,519 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:55:21,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21 WrapperNode [2020-08-18 16:55:21,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:55:21,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:55:21,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:55:21,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:55:21,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (1/1) ... [2020-08-18 16:55:21,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (1/1) ... [2020-08-18 16:55:21,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (1/1) ... [2020-08-18 16:55:21,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (1/1) ... [2020-08-18 16:55:21,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (1/1) ... [2020-08-18 16:55:21,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (1/1) ... [2020-08-18 16:55:21,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (1/1) ... [2020-08-18 16:55:21,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:55:21,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:55:21,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:55:21,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:55:21,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:55:21,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:55:21,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:55:21,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:55:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:55:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:55:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:55:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:55:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:55:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:55:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:55:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:55:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:55:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 16:55:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:55:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:55:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:55:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:55:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:55:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:55:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:55:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:55:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:55:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:55:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:55:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:55:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:55:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:55:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:55:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:55:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:55:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:55:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:55:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:55:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:55:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:55:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:55:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:55:21,739 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:55:21,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:55:21,739 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:55:21,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:55:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:55:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:55:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:55:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:55:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:55:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:55:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:55:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:55:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:55:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:55:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:55:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:55:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:55:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:55:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:55:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:55:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:55:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:55:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:55:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:55:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:55:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:55:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:55:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:55:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:55:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:55:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:55:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:55:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 16:55:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:55:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:55:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:55:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:55:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:55:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:55:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:55:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:55:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:55:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:55:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:55:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:55:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:55:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:55:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:55:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:55:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:55:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:55:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:55:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:55:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:55:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:55:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:55:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:55:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:55:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:55:22,768 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:55:22,768 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:55:22,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:55:22 BoogieIcfgContainer [2020-08-18 16:55:22,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:55:22,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:55:22,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:55:22,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:55:22,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:55:20" (1/3) ... [2020-08-18 16:55:22,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c36a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:55:22, skipping insertion in model container [2020-08-18 16:55:22,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:55:21" (2/3) ... [2020-08-18 16:55:22,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c36a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:55:22, skipping insertion in model container [2020-08-18 16:55:22,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:55:22" (3/3) ... [2020-08-18 16:55:22,783 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2020-08-18 16:55:22,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:55:22,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:55:22,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:55:22,838 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:55:22,838 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:55:22,838 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:55:22,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:55:22,839 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:55:22,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:55:22,839 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:55:22,839 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:55:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-18 16:55:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:55:22,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:22,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:22,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:22,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2020-08-18 16:55:22,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:22,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254240212] [2020-08-18 16:55:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,538 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:55:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:55:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:55:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:23,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254240212] [2020-08-18 16:55:23,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:23,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:55:23,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90906577] [2020-08-18 16:55:23,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:55:23,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:23,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:55:23,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:55:23,711 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-18 16:55:24,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:24,959 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2020-08-18 16:55:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:55:24,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:55:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:24,977 INFO L225 Difference]: With dead ends: 341 [2020-08-18 16:55:24,977 INFO L226 Difference]: Without dead ends: 183 [2020-08-18 16:55:24,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:55:25,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-18 16:55:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2020-08-18 16:55:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 16:55:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2020-08-18 16:55:25,101 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2020-08-18 16:55:25,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:25,102 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2020-08-18 16:55:25,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:55:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2020-08-18 16:55:25,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:55:25,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:25,115 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] [2020-08-18 16:55:25,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:55:25,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:25,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2020-08-18 16:55:25,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:25,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986276077] [2020-08-18 16:55:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,521 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:55:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:55:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:55:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:25,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986276077] [2020-08-18 16:55:25,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:25,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:55:25,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434024074] [2020-08-18 16:55:25,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:55:25,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:25,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:55:25,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:55:25,569 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 4 states. [2020-08-18 16:55:25,982 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:27,046 INFO L93 Difference]: Finished difference Result 274 states and 336 transitions. [2020-08-18 16:55:27,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:55:27,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:55:27,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:27,054 INFO L225 Difference]: With dead ends: 274 [2020-08-18 16:55:27,054 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 16:55:27,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:55:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 16:55:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 16:55:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 16:55:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-18 16:55:27,105 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2020-08-18 16:55:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:27,105 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-18 16:55:27,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:55:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-18 16:55:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:55:27,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:27,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:27,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:55:27,109 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2020-08-18 16:55:27,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:27,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818651084] [2020-08-18 16:55:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,442 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:55:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:55:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:55:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:27,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818651084] [2020-08-18 16:55:27,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:27,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:55:27,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077211635] [2020-08-18 16:55:27,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:55:27,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:27,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:55:27,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:55:27,541 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 8 states. [2020-08-18 16:55:27,928 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:28,250 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:28,520 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:28,790 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:30,170 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2020-08-18 16:55:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:55:30,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 16:55:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:30,176 INFO L225 Difference]: With dead ends: 283 [2020-08-18 16:55:30,177 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 16:55:30,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:55:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 16:55:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 16:55:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 16:55:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-18 16:55:30,219 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2020-08-18 16:55:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:30,219 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-18 16:55:30,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:55:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-18 16:55:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 16:55:30,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:30,222 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] [2020-08-18 16:55:30,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:55:30,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:30,223 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2020-08-18 16:55:30,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:30,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68529055] [2020-08-18 16:55:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,524 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:30,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:55:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:55:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:55:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 16:55:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:30,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68529055] [2020-08-18 16:55:30,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:30,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:55:30,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057836748] [2020-08-18 16:55:30,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:55:30,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:30,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:55:30,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:55:30,621 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 6 states. [2020-08-18 16:55:30,935 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:32,204 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:33,002 INFO L93 Difference]: Finished difference Result 393 states and 487 transitions. [2020-08-18 16:55:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:55:33,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-18 16:55:33,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:33,007 INFO L225 Difference]: With dead ends: 393 [2020-08-18 16:55:33,007 INFO L226 Difference]: Without dead ends: 277 [2020-08-18 16:55:33,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:55:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-18 16:55:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-08-18 16:55:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-18 16:55:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2020-08-18 16:55:33,061 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2020-08-18 16:55:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:33,061 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2020-08-18 16:55:33,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:55:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2020-08-18 16:55:33,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 16:55:33,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:33,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:33,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:55:33,063 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:33,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2020-08-18 16:55:33,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:33,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224530893] [2020-08-18 16:55:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,377 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:55:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 16:55:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 16:55:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 16:55:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:33,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224530893] [2020-08-18 16:55:33,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:33,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:55:33,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401259266] [2020-08-18 16:55:33,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:55:33,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:33,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:55:33,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:55:33,491 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 8 states. [2020-08-18 16:55:33,860 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:35,196 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:35,475 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:35,716 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:35,956 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:36,770 INFO L93 Difference]: Finished difference Result 614 states and 761 transitions. [2020-08-18 16:55:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:55:36,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 16:55:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:36,774 INFO L225 Difference]: With dead ends: 614 [2020-08-18 16:55:36,774 INFO L226 Difference]: Without dead ends: 402 [2020-08-18 16:55:36,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:55:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-08-18 16:55:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 362. [2020-08-18 16:55:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-18 16:55:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 420 transitions. [2020-08-18 16:55:36,851 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 420 transitions. Word has length 89 [2020-08-18 16:55:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:36,852 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 420 transitions. [2020-08-18 16:55:36,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:55:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 420 transitions. [2020-08-18 16:55:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:55:36,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:36,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:36,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:55:36,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:36,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:36,855 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2020-08-18 16:55:36,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:36,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968714153] [2020-08-18 16:55:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,123 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:37,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:55:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:55:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:55:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 16:55:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:37,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968714153] [2020-08-18 16:55:37,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:37,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:55:37,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677357892] [2020-08-18 16:55:37,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:55:37,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:37,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:55:37,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:55:37,251 INFO L87 Difference]: Start difference. First operand 362 states and 420 transitions. Second operand 9 states. [2020-08-18 16:55:37,688 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:38,186 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:39,698 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:41,749 INFO L93 Difference]: Finished difference Result 935 states and 1195 transitions. [2020-08-18 16:55:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:55:41,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 16:55:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:41,758 INFO L225 Difference]: With dead ends: 935 [2020-08-18 16:55:41,758 INFO L226 Difference]: Without dead ends: 712 [2020-08-18 16:55:41,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:55:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-08-18 16:55:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 646. [2020-08-18 16:55:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 16:55:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 781 transitions. [2020-08-18 16:55:41,894 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 781 transitions. Word has length 93 [2020-08-18 16:55:41,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:41,895 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 781 transitions. [2020-08-18 16:55:41,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:55:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 781 transitions. [2020-08-18 16:55:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:55:41,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:41,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:41,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:55:41,897 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:41,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:41,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2020-08-18 16:55:41,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:41,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077144105] [2020-08-18 16:55:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,129 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:55:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:55:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:55:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 16:55:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:42,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077144105] [2020-08-18 16:55:42,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:42,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:55:42,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335203671] [2020-08-18 16:55:42,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:55:42,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:55:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:55:42,285 INFO L87 Difference]: Start difference. First operand 646 states and 781 transitions. Second operand 8 states. [2020-08-18 16:55:43,322 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:43,570 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:43,808 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:45,060 INFO L93 Difference]: Finished difference Result 1191 states and 1490 transitions. [2020-08-18 16:55:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:55:45,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 16:55:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:45,068 INFO L225 Difference]: With dead ends: 1191 [2020-08-18 16:55:45,068 INFO L226 Difference]: Without dead ends: 688 [2020-08-18 16:55:45,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:55:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-08-18 16:55:45,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 646. [2020-08-18 16:55:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 16:55:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 780 transitions. [2020-08-18 16:55:45,212 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 780 transitions. Word has length 93 [2020-08-18 16:55:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:45,213 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 780 transitions. [2020-08-18 16:55:45,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:55:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 780 transitions. [2020-08-18 16:55:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:55:45,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:45,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:45,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:55:45,218 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:45,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:45,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2020-08-18 16:55:45,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:45,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754052607] [2020-08-18 16:55:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,517 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:45,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:55:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:55:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:55:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 16:55:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:45,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754052607] [2020-08-18 16:55:45,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:45,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:55:45,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380182450] [2020-08-18 16:55:45,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:55:45,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:45,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:55:45,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:55:45,723 INFO L87 Difference]: Start difference. First operand 646 states and 780 transitions. Second operand 12 states. [2020-08-18 16:55:46,432 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:46,678 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:46,907 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:47,604 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:47,858 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:55:48,142 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:48,388 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:49,751 INFO L93 Difference]: Finished difference Result 1270 states and 1579 transitions. [2020-08-18 16:55:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:55:49,752 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-18 16:55:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:49,760 INFO L225 Difference]: With dead ends: 1270 [2020-08-18 16:55:49,760 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 16:55:49,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 16:55:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 16:55:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 16:55:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 16:55:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 740 transitions. [2020-08-18 16:55:49,862 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 740 transitions. Word has length 93 [2020-08-18 16:55:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:49,862 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 740 transitions. [2020-08-18 16:55:49,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:55:49,862 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 740 transitions. [2020-08-18 16:55:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 16:55:49,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:49,866 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] [2020-08-18 16:55:49,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:55:49,866 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:49,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:49,867 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2020-08-18 16:55:49,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:49,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684866298] [2020-08-18 16:55:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,165 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:55:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:55:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:55:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:55:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:55:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:55:50,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684866298] [2020-08-18 16:55:50,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:55:50,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 16:55:50,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438389805] [2020-08-18 16:55:50,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:55:50,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:50,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:55:50,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:55:50,360 INFO L87 Difference]: Start difference. First operand 617 states and 740 transitions. Second operand 13 states. [2020-08-18 16:55:51,131 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:51,349 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:51,563 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:52,609 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:53,211 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:53,528 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:53,793 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:55:54,433 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:55:54,762 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:55,216 INFO L93 Difference]: Finished difference Result 1241 states and 1503 transitions. [2020-08-18 16:55:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 16:55:55,218 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-08-18 16:55:55,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:55,223 INFO L225 Difference]: With dead ends: 1241 [2020-08-18 16:55:55,223 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 16:55:55,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 16:55:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 16:55:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 16:55:55,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 16:55:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 724 transitions. [2020-08-18 16:55:55,337 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 724 transitions. Word has length 94 [2020-08-18 16:55:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:55,339 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 724 transitions. [2020-08-18 16:55:55,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:55:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 724 transitions. [2020-08-18 16:55:55,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 16:55:55,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:55,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:55,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:55:55,343 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:55,343 INFO L82 PathProgramCache]: Analyzing trace with hash -361137762, now seen corresponding path program 1 times [2020-08-18 16:55:55,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:55,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576794557] [2020-08-18 16:55:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,758 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:55,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:55:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:55:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:55:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:55:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:55:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 16:55:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 16:55:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 16:55:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 16:55:55,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576794557] [2020-08-18 16:55:55,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:55:55,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:55:55,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641501463] [2020-08-18 16:55:55,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:55:55,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:55,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:55:55,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:55:55,999 INFO L87 Difference]: Start difference. First operand 617 states and 724 transitions. Second operand 10 states. [2020-08-18 16:55:56,833 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:57,051 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:55:57,281 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:57,504 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:55:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:55:58,477 INFO L93 Difference]: Finished difference Result 1154 states and 1382 transitions. [2020-08-18 16:55:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:55:58,483 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-08-18 16:55:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:55:58,487 INFO L225 Difference]: With dead ends: 1154 [2020-08-18 16:55:58,487 INFO L226 Difference]: Without dead ends: 636 [2020-08-18 16:55:58,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:55:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-08-18 16:55:58,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 617. [2020-08-18 16:55:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 16:55:58,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 722 transitions. [2020-08-18 16:55:58,602 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 722 transitions. Word has length 137 [2020-08-18 16:55:58,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:55:58,603 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 722 transitions. [2020-08-18 16:55:58,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:55:58,603 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 722 transitions. [2020-08-18 16:55:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 16:55:58,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:55:58,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:55:58,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:55:58,606 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:55:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:55:58,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1515345056, now seen corresponding path program 1 times [2020-08-18 16:55:58,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:55:58,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002360237] [2020-08-18 16:55:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:55:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:58,934 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:55:58,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:55:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:55:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:58,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:55:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:58,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:55:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:55:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:55:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:55:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:55:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:55:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:55:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:55:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:55:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:55:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 16:55:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 16:55:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 16:55:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:55:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 16:55:59,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002360237] [2020-08-18 16:55:59,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:55:59,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:55:59,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963660094] [2020-08-18 16:55:59,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:55:59,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:55:59,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:55:59,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:55:59,208 INFO L87 Difference]: Start difference. First operand 617 states and 722 transitions. Second operand 12 states. [2020-08-18 16:55:59,754 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:55:59,997 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:56:00,217 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:56:00,823 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:56:01,066 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:56:01,301 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:56:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:56:02,420 INFO L93 Difference]: Finished difference Result 1066 states and 1276 transitions. [2020-08-18 16:56:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:56:02,421 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2020-08-18 16:56:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:56:02,424 INFO L225 Difference]: With dead ends: 1066 [2020-08-18 16:56:02,425 INFO L226 Difference]: Without dead ends: 543 [2020-08-18 16:56:02,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:56:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-08-18 16:56:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 524. [2020-08-18 16:56:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 16:56:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2020-08-18 16:56:02,522 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 137 [2020-08-18 16:56:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:56:02,523 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2020-08-18 16:56:02,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:56:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2020-08-18 16:56:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 16:56:02,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:56:02,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:56:02,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:56:02,526 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:56:02,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:56:02,526 INFO L82 PathProgramCache]: Analyzing trace with hash -834613817, now seen corresponding path program 1 times [2020-08-18 16:56:02,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:56:02,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759378482] [2020-08-18 16:56:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:56:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,816 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:56:02,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:56:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:56:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:56:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:56:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:56:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:56:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:56:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:56:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:56:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:56:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:56:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:03,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:56:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 16:56:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 16:56:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 16:56:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 16:56:03,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759378482] [2020-08-18 16:56:03,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:56:03,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 16:56:03,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333830168] [2020-08-18 16:56:03,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:56:03,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:56:03,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:56:03,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:56:03,060 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2020-08-18 16:56:03,653 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:56:04,248 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:56:05,135 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:56:05,666 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 16:56:06,148 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 16:56:06,406 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:56:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:56:08,028 INFO L93 Difference]: Finished difference Result 1550 states and 1871 transitions. [2020-08-18 16:56:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:56:08,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2020-08-18 16:56:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:56:08,035 INFO L225 Difference]: With dead ends: 1550 [2020-08-18 16:56:08,036 INFO L226 Difference]: Without dead ends: 1050 [2020-08-18 16:56:08,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:56:08,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-18 16:56:08,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1021. [2020-08-18 16:56:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-08-18 16:56:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1176 transitions. [2020-08-18 16:56:08,217 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1176 transitions. Word has length 141 [2020-08-18 16:56:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:56:08,220 INFO L479 AbstractCegarLoop]: Abstraction has 1021 states and 1176 transitions. [2020-08-18 16:56:08,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:56:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1176 transitions. [2020-08-18 16:56:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 16:56:08,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:56:08,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 16:56:08,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:56:08,223 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:56:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:56:08,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1626419797, now seen corresponding path program 1 times [2020-08-18 16:56:08,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:56:08,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633872759] [2020-08-18 16:56:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:56:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,576 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:56:08,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:56:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:56:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:56:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:56:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:56:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:56:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:56:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:56:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:56:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:56:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:56:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 16:56:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:56:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 16:56:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 16:56:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 16:56:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 16:56:08,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633872759] [2020-08-18 16:56:08,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:56:08,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:56:08,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541631901] [2020-08-18 16:56:08,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:56:08,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:56:08,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:56:08,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:56:08,921 INFO L87 Difference]: Start difference. First operand 1021 states and 1176 transitions. Second operand 15 states. [2020-08-18 16:56:09,856 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:56:10,086 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:56:10,381 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:56:10,935 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:56:11,949 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:56:12,277 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:56:12,557 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:56:12,790 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:56:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:56:14,613 INFO L93 Difference]: Finished difference Result 2052 states and 2452 transitions. [2020-08-18 16:56:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:56:14,613 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-18 16:56:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:56:14,620 INFO L225 Difference]: With dead ends: 2052 [2020-08-18 16:56:14,620 INFO L226 Difference]: Without dead ends: 1055 [2020-08-18 16:56:14,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-08-18 16:56:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-18 16:56:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 955. [2020-08-18 16:56:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-08-18 16:56:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1097 transitions. [2020-08-18 16:56:14,849 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1097 transitions. Word has length 145 [2020-08-18 16:56:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:56:14,850 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1097 transitions. [2020-08-18 16:56:14,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:56:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1097 transitions. [2020-08-18 16:56:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 16:56:14,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:56:14,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:56:14,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 16:56:14,854 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:56:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:56:14,855 INFO L82 PathProgramCache]: Analyzing trace with hash -248365737, now seen corresponding path program 1 times [2020-08-18 16:56:14,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:56:14,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449109248] [2020-08-18 16:56:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:56:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,114 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:56:15,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:56:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:56:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:56:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:56:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:56:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:56:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:56:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:56:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:56:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:56:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:56:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 16:56:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:56:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:56:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:56:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 16:56:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 16:56:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 16:56:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:56:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-18 16:56:15,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449109248] [2020-08-18 16:56:15,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:56:15,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:56:15,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996929774] [2020-08-18 16:56:15,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:56:15,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:56:15,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:56:15,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:56:15,395 INFO L87 Difference]: Start difference. First operand 955 states and 1097 transitions. Second operand 15 states. [2020-08-18 16:56:15,888 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:56:16,531 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187