/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:31:56,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:31:56,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:31:56,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:31:56,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:31:56,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:31:56,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:31:56,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:31:56,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:31:56,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:31:56,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:31:56,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:31:56,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:31:56,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:31:56,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:31:56,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:31:56,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:31:56,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:31:56,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:31:56,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:31:56,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:31:56,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:31:56,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:31:56,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:31:56,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:31:56,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:31:56,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:31:56,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:31:56,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:31:56,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:31:56,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:31:56,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:31:56,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:31:56,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:31:56,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:31:56,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:31:56,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:31:56,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:31:56,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:31:56,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:31:56,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:31:56,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:31:56,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:31:56,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:31:56,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:31:56,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:31:56,680 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:31:56,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:31:56,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:31:56,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:31:56,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:31:56,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:31:56,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:31:56,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:31:56,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:31:56,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:31:56,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:31:56,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:31:56,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:31:56,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:31:56,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:31:56,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:31:56,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:31:56,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:31:56,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:31:56,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:31:56,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:31:56,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:31:56,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:31:56,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:31:56,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:31:56,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:31:57,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:31:57,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:31:57,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:31:57,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:31:57,037 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:31:57,038 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-19 02:31:57,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9363429/9f4537fc1b9a431aa2d15e7fcf5514f0/FLAG64e53a70e [2020-08-19 02:31:57,642 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:31:57,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-19 02:31:57,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9363429/9f4537fc1b9a431aa2d15e7fcf5514f0/FLAG64e53a70e [2020-08-19 02:31:57,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9363429/9f4537fc1b9a431aa2d15e7fcf5514f0 [2020-08-19 02:31:57,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:31:57,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:31:57,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:31:57,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:31:57,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:31:57,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:31:57" (1/1) ... [2020-08-19 02:31:57,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a47163c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:57, skipping insertion in model container [2020-08-19 02:31:57,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:31:57" (1/1) ... [2020-08-19 02:31:57,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:31:58,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:31:58,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:31:58,410 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:31:58,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:31:58,533 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:31:58,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58 WrapperNode [2020-08-19 02:31:58,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:31:58,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:31:58,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:31:58,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:31:58,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (1/1) ... [2020-08-19 02:31:58,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (1/1) ... [2020-08-19 02:31:58,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (1/1) ... [2020-08-19 02:31:58,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (1/1) ... [2020-08-19 02:31:58,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (1/1) ... [2020-08-19 02:31:58,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (1/1) ... [2020-08-19 02:31:58,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (1/1) ... [2020-08-19 02:31:58,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:31:58,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:31:58,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:31:58,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:31:58,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:31:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:31:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:31:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:31:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:31:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:31:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:31:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:31:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:31:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:31:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:31:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:31:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:31:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:31:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:31:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:31:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:31:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:31:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:31:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:31:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:31:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:31:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:31:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:31:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:31:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:31:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:31:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:31:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:31:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:31:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:31:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:31:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:31:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:31:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:31:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:31:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:31:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:31:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 02:31:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:31:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:31:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:31:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:31:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:31:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:31:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:31:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:31:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:31:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:31:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:31:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:31:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:31:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:31:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:31:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:31:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:31:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:31:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:31:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:31:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:31:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:31:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:31:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:31:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:31:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:31:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:31:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:31:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:31:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 02:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:31:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:31:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:31:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:31:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:31:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:31:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:31:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:31:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:31:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:31:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:31:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:31:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:31:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:31:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:31:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:31:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:31:59,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:31:59,804 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:31:59,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:31:59 BoogieIcfgContainer [2020-08-19 02:31:59,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:31:59,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:31:59,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:31:59,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:31:59,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:31:57" (1/3) ... [2020-08-19 02:31:59,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf051a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:31:59, skipping insertion in model container [2020-08-19 02:31:59,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:58" (2/3) ... [2020-08-19 02:31:59,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf051a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:31:59, skipping insertion in model container [2020-08-19 02:31:59,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:31:59" (3/3) ... [2020-08-19 02:31:59,824 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2020-08-19 02:31:59,832 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:31:59,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:31:59,850 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:31:59,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:31:59,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:31:59,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:31:59,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:31:59,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:31:59,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:31:59,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:31:59,872 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:31:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-19 02:31:59,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:31:59,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:31:59,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:31:59,905 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:31:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:31:59,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1904787813, now seen corresponding path program 1 times [2020-08-19 02:31:59,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:31:59,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161326657] [2020-08-19 02:31:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,680 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:32:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:32:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:00,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161326657] [2020-08-19 02:32:00,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:00,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:32:00,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581135206] [2020-08-19 02:32:00,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:32:00,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:00,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:32:00,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:32:00,850 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-19 02:32:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:02,099 INFO L93 Difference]: Finished difference Result 275 states and 361 transitions. [2020-08-19 02:32:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:32:02,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:32:02,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:02,116 INFO L225 Difference]: With dead ends: 275 [2020-08-19 02:32:02,116 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 02:32:02,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:32:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 02:32:02,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-19 02:32:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 02:32:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-08-19 02:32:02,204 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 46 [2020-08-19 02:32:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:02,205 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-08-19 02:32:02,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:32:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-08-19 02:32:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:32:02,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:02,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:02,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:32:02,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:02,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:02,210 INFO L82 PathProgramCache]: Analyzing trace with hash -8679295, now seen corresponding path program 1 times [2020-08-19 02:32:02,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:02,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546823723] [2020-08-19 02:32:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,582 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:02,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:32:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:02,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546823723] [2020-08-19 02:32:02,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:02,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:32:02,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031735397] [2020-08-19 02:32:02,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:32:02,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:02,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:32:02,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:32:02,668 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-08-19 02:32:03,083 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:03,826 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2020-08-19 02:32:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:32:03,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:32:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:03,831 INFO L225 Difference]: With dead ends: 208 [2020-08-19 02:32:03,831 INFO L226 Difference]: Without dead ends: 133 [2020-08-19 02:32:03,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:32:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-19 02:32:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-19 02:32:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-19 02:32:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-08-19 02:32:03,867 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 47 [2020-08-19 02:32:03,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:03,867 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-08-19 02:32:03,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:32:03,867 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-08-19 02:32:03,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:32:03,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:03,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:03,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:32:03,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:03,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1364944070, now seen corresponding path program 1 times [2020-08-19 02:32:03,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:03,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991976256] [2020-08-19 02:32:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:04,192 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:04,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:04,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:04,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:04,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:32:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:32:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:04,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991976256] [2020-08-19 02:32:04,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:04,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:32:04,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319005944] [2020-08-19 02:32:04,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:32:04,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:04,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:32:04,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:32:04,304 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 8 states. [2020-08-19 02:32:04,682 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:04,961 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:05,215 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:05,459 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:06,440 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2020-08-19 02:32:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:32:06,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 02:32:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:06,444 INFO L225 Difference]: With dead ends: 217 [2020-08-19 02:32:06,444 INFO L226 Difference]: Without dead ends: 133 [2020-08-19 02:32:06,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:32:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-19 02:32:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-19 02:32:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-19 02:32:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-08-19 02:32:06,479 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 51 [2020-08-19 02:32:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:06,479 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-08-19 02:32:06,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:32:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-08-19 02:32:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 02:32:06,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:06,482 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] [2020-08-19 02:32:06,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:32:06,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:06,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1317252167, now seen corresponding path program 1 times [2020-08-19 02:32:06,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:06,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755123017] [2020-08-19 02:32:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,797 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:32:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:32:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:32:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:06,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755123017] [2020-08-19 02:32:06,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:06,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:32:06,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215400015] [2020-08-19 02:32:06,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:32:06,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:06,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:32:06,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:32:06,875 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 6 states. [2020-08-19 02:32:07,175 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:08,264 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:08,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:08,773 INFO L93 Difference]: Finished difference Result 300 states and 370 transitions. [2020-08-19 02:32:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:32:08,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 02:32:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:08,777 INFO L225 Difference]: With dead ends: 300 [2020-08-19 02:32:08,777 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 02:32:08,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:32:08,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 02:32:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2020-08-19 02:32:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-08-19 02:32:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2020-08-19 02:32:08,819 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 59 [2020-08-19 02:32:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:08,819 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2020-08-19 02:32:08,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:32:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2020-08-19 02:32:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-19 02:32:08,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:08,822 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] [2020-08-19 02:32:08,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:32:08,823 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:08,823 INFO L82 PathProgramCache]: Analyzing trace with hash 19293366, now seen corresponding path program 1 times [2020-08-19 02:32:08,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:08,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500689353] [2020-08-19 02:32:08,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,104 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:09,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:32:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:32:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 02:32:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:09,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500689353] [2020-08-19 02:32:09,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:09,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:32:09,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830472859] [2020-08-19 02:32:09,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:32:09,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:09,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:32:09,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:32:09,234 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 8 states. [2020-08-19 02:32:09,582 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:10,424 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:10,758 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:11,211 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:11,436 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:11,702 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:12,403 INFO L93 Difference]: Finished difference Result 520 states and 648 transitions. [2020-08-19 02:32:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:32:12,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-19 02:32:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:12,409 INFO L225 Difference]: With dead ends: 520 [2020-08-19 02:32:12,409 INFO L226 Difference]: Without dead ends: 369 [2020-08-19 02:32:12,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:32:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-19 02:32:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 305. [2020-08-19 02:32:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-19 02:32:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 352 transitions. [2020-08-19 02:32:12,483 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 352 transitions. Word has length 73 [2020-08-19 02:32:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:12,484 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 352 transitions. [2020-08-19 02:32:12,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:32:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 352 transitions. [2020-08-19 02:32:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 02:32:12,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:12,487 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] [2020-08-19 02:32:12,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:32:12,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:12,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:12,488 INFO L82 PathProgramCache]: Analyzing trace with hash -989642822, now seen corresponding path program 1 times [2020-08-19 02:32:12,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:12,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565536081] [2020-08-19 02:32:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,791 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:12,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 02:32:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 02:32:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:12,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565536081] [2020-08-19 02:32:12,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:12,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:32:12,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795353937] [2020-08-19 02:32:12,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:32:12,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:12,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:32:12,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:32:12,947 INFO L87 Difference]: Start difference. First operand 305 states and 352 transitions. Second operand 9 states. [2020-08-19 02:32:13,310 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:14,338 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:14,600 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:15,313 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:15,546 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:15,813 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:15,953 INFO L93 Difference]: Finished difference Result 408 states and 516 transitions. [2020-08-19 02:32:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:32:15,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-19 02:32:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:15,958 INFO L225 Difference]: With dead ends: 408 [2020-08-19 02:32:15,958 INFO L226 Difference]: Without dead ends: 405 [2020-08-19 02:32:15,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:32:15,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-08-19 02:32:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 305. [2020-08-19 02:32:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-19 02:32:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 351 transitions. [2020-08-19 02:32:16,023 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 351 transitions. Word has length 77 [2020-08-19 02:32:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:16,023 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 351 transitions. [2020-08-19 02:32:16,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:32:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 351 transitions. [2020-08-19 02:32:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:32:16,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:16,026 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:32:16,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:32:16,026 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash 636453553, now seen corresponding path program 1 times [2020-08-19 02:32:16,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:16,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794660244] [2020-08-19 02:32:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,244 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:16,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:32:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 02:32:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:32:16,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794660244] [2020-08-19 02:32:16,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:16,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:32:16,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124608020] [2020-08-19 02:32:16,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:32:16,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:16,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:32:16,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:32:16,400 INFO L87 Difference]: Start difference. First operand 305 states and 351 transitions. Second operand 9 states. [2020-08-19 02:32:17,223 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:17,478 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:32:17,729 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:17,960 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:18,796 INFO L93 Difference]: Finished difference Result 694 states and 873 transitions. [2020-08-19 02:32:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:32:18,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 02:32:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:18,804 INFO L225 Difference]: With dead ends: 694 [2020-08-19 02:32:18,805 INFO L226 Difference]: Without dead ends: 413 [2020-08-19 02:32:18,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:32:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-19 02:32:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 315. [2020-08-19 02:32:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-19 02:32:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 361 transitions. [2020-08-19 02:32:18,868 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 361 transitions. Word has length 93 [2020-08-19 02:32:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:18,868 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 361 transitions. [2020-08-19 02:32:18,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:32:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 361 transitions. [2020-08-19 02:32:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:32:18,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:18,871 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:32:18,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:32:18,871 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:18,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:18,871 INFO L82 PathProgramCache]: Analyzing trace with hash -260939725, now seen corresponding path program 1 times [2020-08-19 02:32:18,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:18,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559773989] [2020-08-19 02:32:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,114 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:19,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:32:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 02:32:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:32:19,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559773989] [2020-08-19 02:32:19,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:19,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:32:19,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193006100] [2020-08-19 02:32:19,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:32:19,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:19,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:32:19,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:32:19,305 INFO L87 Difference]: Start difference. First operand 315 states and 361 transitions. Second operand 11 states. [2020-08-19 02:32:19,994 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:20,236 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:20,465 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:21,026 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:21,279 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:21,532 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:22,550 INFO L93 Difference]: Finished difference Result 714 states and 895 transitions. [2020-08-19 02:32:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:32:22,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 02:32:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:22,557 INFO L225 Difference]: With dead ends: 714 [2020-08-19 02:32:22,557 INFO L226 Difference]: Without dead ends: 423 [2020-08-19 02:32:22,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:32:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-19 02:32:22,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 323. [2020-08-19 02:32:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-19 02:32:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 369 transitions. [2020-08-19 02:32:22,630 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 369 transitions. Word has length 93 [2020-08-19 02:32:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:22,630 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 369 transitions. [2020-08-19 02:32:22,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:32:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 369 transitions. [2020-08-19 02:32:22,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:32:22,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:22,633 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:32:22,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:32:22,634 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:22,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1709999732, now seen corresponding path program 1 times [2020-08-19 02:32:22,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:22,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378859935] [2020-08-19 02:32:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,864 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:32:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 02:32:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:32:22,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378859935] [2020-08-19 02:32:22,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:22,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:32:22,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057476798] [2020-08-19 02:32:22,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:32:22,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:22,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:32:22,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:32:22,989 INFO L87 Difference]: Start difference. First operand 323 states and 369 transitions. Second operand 7 states. [2020-08-19 02:32:23,287 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:23,785 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:25,460 INFO L93 Difference]: Finished difference Result 997 states and 1285 transitions. [2020-08-19 02:32:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 02:32:25,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-19 02:32:25,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:25,466 INFO L225 Difference]: With dead ends: 997 [2020-08-19 02:32:25,466 INFO L226 Difference]: Without dead ends: 698 [2020-08-19 02:32:25,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:32:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-19 02:32:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 599. [2020-08-19 02:32:25,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-19 02:32:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 711 transitions. [2020-08-19 02:32:25,586 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 711 transitions. Word has length 93 [2020-08-19 02:32:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:25,586 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 711 transitions. [2020-08-19 02:32:25,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:32:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 711 transitions. [2020-08-19 02:32:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 02:32:25,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:25,593 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:32:25,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:32:25,593 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:25,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1136093798, now seen corresponding path program 1 times [2020-08-19 02:32:25,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:25,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521028060] [2020-08-19 02:32:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:25,926 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:25,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:25,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:25,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:32:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:25,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:32:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:32:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:32:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:32:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:32:26,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521028060] [2020-08-19 02:32:26,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:32:26,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 02:32:26,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145983540] [2020-08-19 02:32:26,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 02:32:26,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:26,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 02:32:26,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-19 02:32:26,258 INFO L87 Difference]: Start difference. First operand 599 states and 711 transitions. Second operand 17 states. [2020-08-19 02:32:26,833 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:27,140 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:27,395 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:27,633 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:28,199 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:29,088 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:29,421 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:29,699 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:29,975 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:30,354 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:30,652 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:32:31,271 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 02:32:31,857 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 02:32:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:33,316 INFO L93 Difference]: Finished difference Result 1238 states and 1532 transitions. [2020-08-19 02:32:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 02:32:33,317 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-19 02:32:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:33,322 INFO L225 Difference]: With dead ends: 1238 [2020-08-19 02:32:33,322 INFO L226 Difference]: Without dead ends: 663 [2020-08-19 02:32:33,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 02:32:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-08-19 02:32:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 567. [2020-08-19 02:32:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-19 02:32:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 660 transitions. [2020-08-19 02:32:33,483 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 660 transitions. Word has length 97 [2020-08-19 02:32:33,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:33,484 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 660 transitions. [2020-08-19 02:32:33,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 02:32:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 660 transitions. [2020-08-19 02:32:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 02:32:33,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:33,487 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] [2020-08-19 02:32:33,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:32:33,487 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:33,488 INFO L82 PathProgramCache]: Analyzing trace with hash 773081915, now seen corresponding path program 1 times [2020-08-19 02:32:33,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:33,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359505649] [2020-08-19 02:32:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:32:33,545 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:32:33,546 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:32:33,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:32:33,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:32:33 BoogieIcfgContainer [2020-08-19 02:32:33,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:32:33,580 INFO L168 Benchmark]: Toolchain (without parser) took 35639.15 ms. Allocated memory was 138.9 MB in the beginning and 699.4 MB in the end (delta: 560.5 MB). Free memory was 101.1 MB in the beginning and 638.8 MB in the end (delta: -537.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:33,580 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 02:32:33,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.89 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.9 MB in the beginning and 168.3 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:33,582 INFO L168 Benchmark]: Boogie Preprocessor took 106.16 ms. Allocated memory is still 200.8 MB. Free memory was 168.3 MB in the beginning and 162.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:33,583 INFO L168 Benchmark]: RCFGBuilder took 1173.01 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 162.9 MB in the beginning and 193.9 MB in the end (delta: -31.0 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:33,583 INFO L168 Benchmark]: TraceAbstraction took 33762.06 ms. Allocated memory was 233.3 MB in the beginning and 699.4 MB in the end (delta: 466.1 MB). Free memory was 193.9 MB in the beginning and 638.8 MB in the end (delta: -444.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:33,586 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 592.89 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.9 MB in the beginning and 168.3 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.16 ms. Allocated memory is still 200.8 MB. Free memory was 168.3 MB in the beginning and 162.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1173.01 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 162.9 MB in the beginning and 193.9 MB in the end (delta: -31.0 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33762.06 ms. Allocated memory was 233.3 MB in the beginning and 699.4 MB in the end (delta: 466.1 MB). Free memory was 193.9 MB in the beginning and 638.8 MB in the end (delta: -444.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 887]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L480] int waterLevel = 1; [L481] int methaneLevelCritical = 0; [L578] int pumpRunning = 0; [L579] int systemActive = 1; [L749] int cleanupTimeShifts = 4; [L825] int retValue_acc ; [L826] int tmp ; [L830] FCALL select_helpers() [L831] FCALL select_features() [L832] CALL, EXPR valid_product() [L874] int retValue_acc ; [L877] retValue_acc = 1 [L878] return (retValue_acc); [L832] RET, EXPR valid_product() [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L836] FCALL setup() [L837] CALL runTest() [L816] CALL test() [L411] int splverifierCounter ; [L412] int tmp ; [L413] int tmp___0 ; [L414] int tmp___1 ; [L415] int tmp___2 ; [L418] splverifierCounter = 0 [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp) [L432] CALL waterRise() [L498] COND TRUE waterLevel < 2 [L499] waterLevel = waterLevel + 1 [L432] RET waterRise() [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp___0)) [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND FALSE !(\read(pumpRunning)) [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND TRUE ! pumpRunning [L620] CALL, EXPR isHighWaterLevel() [L730] int retValue_acc ; [L731] int tmp ; [L732] int tmp___0 ; [L736] CALL, EXPR isHighWaterSensorDry() [L560] int retValue_acc ; [L563] COND FALSE !(waterLevel < 2) [L567] retValue_acc = 0 [L568] return (retValue_acc); [L736] RET, EXPR isHighWaterSensorDry() [L736] tmp = isHighWaterSensorDry() [L738] COND FALSE !(\read(tmp)) [L741] tmp___0 = 1 [L743] retValue_acc = tmp___0 [L744] return (retValue_acc); [L620] RET, EXPR isHighWaterLevel() [L620] tmp = isHighWaterLevel() [L622] COND TRUE \read(tmp) [L624] CALL activatePump() [L649] int tmp ; [L653] CALL, EXPR isMethaneAlarm() [L674] int retValue_acc ; [L678] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L678] RET, EXPR isMethaneLevelCritical() [L678] retValue_acc = isMethaneLevelCritical() [L680] return (retValue_acc); [L653] RET, EXPR isMethaneAlarm() [L653] tmp = isMethaneAlarm() [L655] COND FALSE !(\read(tmp)) [L659] CALL activatePump__wrappee__highWaterSensor() [L643] pumpRunning = 1 [L659] RET activatePump__wrappee__highWaterSensor() [L624] RET activatePump() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND FALSE !(\read(tmp)) [L601] RET __utac_acc__Specification1_spec__1() [L463] RET timeShift() [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp)) [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp___0) [L442] CALL changeMethaneLevel() [L510] COND FALSE !(\read(methaneLevelCritical)) [L513] methaneLevelCritical = 1 [L442] RET changeMethaneLevel() [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND TRUE \read(pumpRunning) [L588] CALL lowerWaterLevel() [L486] COND TRUE waterLevel > 0 [L487] waterLevel = waterLevel - 1 [L588] RET lowerWaterLevel() [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND FALSE !(! pumpRunning) [L633] FCALL processEnvironment__wrappee__base() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND TRUE \read(tmp) [L902] CALL, EXPR isPumpRunning() [L685] int retValue_acc ; [L688] retValue_acc = pumpRunning [L689] return (retValue_acc); [L902] RET, EXPR isPumpRunning() [L902] tmp___0 = isPumpRunning() [L904] COND TRUE \read(tmp___0) [L906] CALL __automaton_fail() [L887] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 27.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1133 SDtfs, 2290 SDslu, 1326 SDs, 0 SdLazy, 6349 SolverSat, 1428 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 680 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 861 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 229226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...