/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:29:45,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:29:45,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:29:45,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:29:45,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:29:45,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:29:45,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:29:45,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:29:45,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:29:45,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:29:45,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:29:45,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:29:45,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:29:45,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:29:45,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:29:45,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:29:45,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:29:45,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:29:45,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:29:45,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:29:45,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:29:45,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:29:45,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:29:45,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:29:45,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:29:45,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:29:45,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:29:45,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:29:45,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:29:45,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:29:45,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:29:45,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:29:45,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:29:45,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:29:45,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:29:45,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:29:45,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:29:45,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:29:45,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:29:45,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:29:45,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:29:45,514 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 [2020-08-22 04:29:45,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:29:45,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:29:45,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:29:45,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:29:45,558 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:29:45,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:29:45,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:29:45,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:29:45,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:29:45,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:29:45,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:29:45,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:29:45,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:29:45,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:29:45,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:29:45,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:29:45,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:29:45,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:29:45,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:29:45,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:29:45,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:29:45,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:29:45,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:29:45,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:29:45,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:29:45,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:29:45,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:29:45,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:29:45,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:29:45,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:29:45,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:29:45,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:29:45,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:29:45,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:29:45,919 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:29:45,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-22 04:29:46,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/606be833b/4a4f7efc7ff2405fbf125e43047935ba/FLAG2009783be [2020-08-22 04:29:46,546 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:29:46,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-22 04:29:46,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/606be833b/4a4f7efc7ff2405fbf125e43047935ba/FLAG2009783be [2020-08-22 04:29:46,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/606be833b/4a4f7efc7ff2405fbf125e43047935ba [2020-08-22 04:29:46,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:29:46,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:29:46,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:29:46,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:29:46,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:29:46,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:29:46" (1/1) ... [2020-08-22 04:29:46,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da81866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:46, skipping insertion in model container [2020-08-22 04:29:46,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:29:46" (1/1) ... [2020-08-22 04:29:46,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:29:46,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:29:47,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:29:47,422 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:29:47,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:29:47,538 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:29:47,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47 WrapperNode [2020-08-22 04:29:47,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:29:47,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:29:47,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:29:47,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:29:47,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (1/1) ... [2020-08-22 04:29:47,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (1/1) ... [2020-08-22 04:29:47,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (1/1) ... [2020-08-22 04:29:47,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (1/1) ... [2020-08-22 04:29:47,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (1/1) ... [2020-08-22 04:29:47,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (1/1) ... [2020-08-22 04:29:47,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (1/1) ... [2020-08-22 04:29:47,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:29:47,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:29:47,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:29:47,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:29:47,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (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 [2020-08-22 04:29:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:29:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:29:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:29:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:29:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:29:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:29:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:29:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:29:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:29:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:29:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 04:29:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:29:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:29:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:29:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:29:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:29:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:29:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:29:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:29:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:29:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:29:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:29:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:29:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:29:47,703 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:29:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:29:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:29:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:29:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:29:47,704 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:29:47,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:29:47,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:29:47,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:29:47,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:29:47,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:29:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:29:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:29:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:29:47,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:29:47,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:29:47,707 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:29:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:29:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:29:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:29:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:29:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:29:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:29:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:29:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:29:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:29:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:29:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:29:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:29:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:29:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:29:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:29:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:29:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:29:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 04:29:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:29:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:29:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:29:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:29:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:29:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:29:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:29:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:29:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:29:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:29:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:29:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:29:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:29:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:29:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:29:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:29:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:29:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:29:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:29:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:29:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:29:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:29:47,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:29:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:29:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:29:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:29:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:29:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:29:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:29:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:29:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:29:48,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:29:48,789 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:29:48,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:29:48 BoogieIcfgContainer [2020-08-22 04:29:48,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:29:48,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:29:48,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:29:48,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:29:48,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:29:46" (1/3) ... [2020-08-22 04:29:48,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a13c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:29:48, skipping insertion in model container [2020-08-22 04:29:48,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:47" (2/3) ... [2020-08-22 04:29:48,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a13c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:29:48, skipping insertion in model container [2020-08-22 04:29:48,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:29:48" (3/3) ... [2020-08-22 04:29:48,802 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-22 04:29:48,813 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:29:48,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:29:48,835 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:29:48,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:29:48,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:29:48,860 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:29:48,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:29:48,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:29:48,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:29:48,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:29:48,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:29:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-22 04:29:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:29:48,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:48,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:48,898 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-22 04:29:48,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:48,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801483855] [2020-08-22 04:29:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,610 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:49,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:29:49,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801483855] [2020-08-22 04:29:49,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:49,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:29:49,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269813343] [2020-08-22 04:29:49,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:29:49,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:49,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:29:49,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:29:49,799 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-22 04:29:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:50,955 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-22 04:29:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:29:50,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 04:29:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:50,973 INFO L225 Difference]: With dead ends: 287 [2020-08-22 04:29:50,973 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 04:29:50,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:29:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 04:29:51,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-22 04:29:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 04:29:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-22 04:29:51,070 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-22 04:29:51,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:51,071 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-22 04:29:51,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:29:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-22 04:29:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 04:29:51,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:51,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:51,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:29:51,076 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:51,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-22 04:29:51,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:51,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825152822] [2020-08-22 04:29:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,376 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:29:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:29:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:29:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:29:51,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825152822] [2020-08-22 04:29:51,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:51,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:29:51,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299136944] [2020-08-22 04:29:51,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:29:51,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:51,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:29:51,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:29:51,454 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-22 04:29:51,864 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:52,589 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-22 04:29:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:29:52,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 04:29:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:52,594 INFO L225 Difference]: With dead ends: 220 [2020-08-22 04:29:52,594 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 04:29:52,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:29:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 04:29:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-22 04:29:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 04:29:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-22 04:29:52,630 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-22 04:29:52,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:52,631 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-22 04:29:52,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:29:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-22 04:29:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 04:29:52,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:52,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:52,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:29:52,634 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-22 04:29:52,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:52,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783235287] [2020-08-22 04:29:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:52,930 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:29:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:29:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:29:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:29:53,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783235287] [2020-08-22 04:29:53,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:53,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:53,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555907230] [2020-08-22 04:29:53,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:53,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:53,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:53,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:53,063 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-22 04:29:53,476 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:53,775 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:54,003 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:54,268 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:55,334 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-22 04:29:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:29:55,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 04:29:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:55,339 INFO L225 Difference]: With dead ends: 229 [2020-08-22 04:29:55,340 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 04:29:55,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:29:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 04:29:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-22 04:29:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 04:29:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-22 04:29:55,423 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-22 04:29:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:55,423 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-22 04:29:55,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:29:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-22 04:29:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 04:29:55,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:55,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:55,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:29:55,427 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-22 04:29:55,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:55,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783617529] [2020-08-22 04:29:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,685 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:29:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:29:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:29:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 04:29:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:29:55,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783617529] [2020-08-22 04:29:55,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:55,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:29:55,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917174387] [2020-08-22 04:29:55,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:29:55,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:55,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:29:55,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:29:55,805 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-22 04:29:56,155 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:57,214 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:57,784 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-22 04:29:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:29:57,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-22 04:29:57,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:57,787 INFO L225 Difference]: With dead ends: 324 [2020-08-22 04:29:57,788 INFO L226 Difference]: Without dead ends: 234 [2020-08-22 04:29:57,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:29:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-22 04:29:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-22 04:29:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-22 04:29:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-22 04:29:57,854 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-22 04:29:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:57,855 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-22 04:29:57,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:29:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-22 04:29:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 04:29:57,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:57,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:57,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:29:57,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:57,858 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-22 04:29:57,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:57,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713393853] [2020-08-22 04:29:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,139 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:29:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:29:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 04:29:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:29:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:29:58,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713393853] [2020-08-22 04:29:58,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:58,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:58,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511265628] [2020-08-22 04:29:58,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:58,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:58,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:58,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:58,223 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-22 04:29:58,642 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:00,029 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:00,328 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:00,586 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:00,808 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:01,415 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-22 04:30:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:30:01,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-22 04:30:01,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:01,421 INFO L225 Difference]: With dead ends: 528 [2020-08-22 04:30:01,421 INFO L226 Difference]: Without dead ends: 359 [2020-08-22 04:30:01,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:30:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-22 04:30:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-22 04:30:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-22 04:30:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-22 04:30:01,482 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-22 04:30:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:01,482 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-22 04:30:01,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:30:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-22 04:30:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:30:01,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:01,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:30:01,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:30:01,485 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:01,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-22 04:30:01,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:01,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991890005] [2020-08-22 04:30:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,796 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:30:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 04:30:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:30:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:30:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:30:01,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991890005] [2020-08-22 04:30:01,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:01,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:30:01,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624802901] [2020-08-22 04:30:01,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:30:01,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:01,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:30:01,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:30:01,941 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-22 04:30:02,333 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:02,925 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:04,506 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:05,956 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-22 04:30:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 04:30:05,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 04:30:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:05,965 INFO L225 Difference]: With dead ends: 770 [2020-08-22 04:30:05,965 INFO L226 Difference]: Without dead ends: 590 [2020-08-22 04:30:05,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-22 04:30:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-22 04:30:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-22 04:30:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-22 04:30:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-22 04:30:06,062 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-22 04:30:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:06,062 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-22 04:30:06,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:30:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-22 04:30:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:30:06,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:06,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:30:06,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:30:06,065 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:06,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:06,065 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-22 04:30:06,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:06,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898527436] [2020-08-22 04:30:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,322 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:30:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 04:30:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:30:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:30:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:30:06,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898527436] [2020-08-22 04:30:06,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:06,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:30:06,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654166391] [2020-08-22 04:30:06,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:30:06,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:06,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:30:06,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:30:06,443 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-22 04:30:07,406 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:07,634 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:07,878 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:08,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:08,766 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-22 04:30:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:30:08,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-22 04:30:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:08,776 INFO L225 Difference]: With dead ends: 947 [2020-08-22 04:30:08,776 INFO L226 Difference]: Without dead ends: 566 [2020-08-22 04:30:08,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:30:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-22 04:30:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-22 04:30:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-22 04:30:08,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-22 04:30:08,909 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-22 04:30:08,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:08,909 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-22 04:30:08,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:30:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-22 04:30:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:30:08,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:08,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:30:08,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:30:08,913 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:08,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:08,913 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-22 04:30:08,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:08,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496084512] [2020-08-22 04:30:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,187 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:30:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 04:30:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:30:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:30:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:30:09,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496084512] [2020-08-22 04:30:09,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:09,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:30:09,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178827193] [2020-08-22 04:30:09,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:30:09,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:09,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:30:09,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:30:09,342 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-22 04:30:09,880 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:10,150 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:10,378 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:10,997 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:11,232 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:11,489 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:11,714 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:12,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:12,781 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-22 04:30:12,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:30:12,781 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-22 04:30:12,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:12,786 INFO L225 Difference]: With dead ends: 1071 [2020-08-22 04:30:12,786 INFO L226 Difference]: Without dead ends: 571 [2020-08-22 04:30:12,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-22 04:30:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-22 04:30:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-22 04:30:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-22 04:30:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-22 04:30:12,907 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-22 04:30:12,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:12,908 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-22 04:30:12,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:30:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-22 04:30:12,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-22 04:30:12,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:12,914 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] [2020-08-22 04:30:12,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:30:12,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:12,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:12,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-22 04:30:12,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:12,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153575244] [2020-08-22 04:30:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,222 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:13,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:30:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:30:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 04:30:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 04:30:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:30:13,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153575244] [2020-08-22 04:30:13,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:30:13,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:30:13,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563261030] [2020-08-22 04:30:13,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:30:13,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:13,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:30:13,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:30:13,461 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-22 04:30:14,108 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:14,782 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:15,508 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:15,811 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:16,091 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:16,347 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:16,632 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:16,905 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:17,391 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-22 04:30:17,656 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:17,950 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:18,250 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:30:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:20,193 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-22 04:30:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:30:20,194 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-22 04:30:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:20,201 INFO L225 Difference]: With dead ends: 1563 [2020-08-22 04:30:20,201 INFO L226 Difference]: Without dead ends: 1056 [2020-08-22 04:30:20,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-22 04:30:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-22 04:30:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-22 04:30:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-22 04:30:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-22 04:30:20,373 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-22 04:30:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:20,373 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-22 04:30:20,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:30:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-22 04:30:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 04:30:20,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:20,378 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, 1, 1] [2020-08-22 04:30:20,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:30:20,378 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-22 04:30:20,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:20,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033018071] [2020-08-22 04:30:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,701 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:20,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:30:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:30:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:30:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:30:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 04:30:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:30:20,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033018071] [2020-08-22 04:30:20,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:20,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 04:30:20,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002065652] [2020-08-22 04:30:20,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 04:30:20,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:20,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 04:30:20,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:30:20,916 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-22 04:30:21,773 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:22,004 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:22,218 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:22,714 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:23,414 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:23,785 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:24,389 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:24,652 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:24,937 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:26,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:26,445 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-22 04:30:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 04:30:26,446 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-22 04:30:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:26,453 INFO L225 Difference]: With dead ends: 2050 [2020-08-22 04:30:26,453 INFO L226 Difference]: Without dead ends: 1076 [2020-08-22 04:30:26,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-22 04:30:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-22 04:30:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-22 04:30:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-22 04:30:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-22 04:30:26,654 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-22 04:30:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:26,655 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-22 04:30:26,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 04:30:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-22 04:30:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 04:30:26,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:26,657 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, 1, 1] [2020-08-22 04:30:26,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:30:26,658 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:26,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-22 04:30:26,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:26,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921593141] [2020-08-22 04:30:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:26,995 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:26,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:30:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:30:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:30:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 04:30:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:30:27,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921593141] [2020-08-22 04:30:27,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:27,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 04:30:27,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803119557] [2020-08-22 04:30:27,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 04:30:27,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 04:30:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:30:27,132 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-22 04:30:28,147 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:28,374 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:28,605 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:29,605 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:30,092 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:30,395 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:30,668 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:31,330 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-22 04:30:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:30:31,330 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-22 04:30:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:31,332 INFO L225 Difference]: With dead ends: 1575 [2020-08-22 04:30:31,332 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 04:30:31,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-22 04:30:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 04:30:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 04:30:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 04:30:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 04:30:31,337 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-22 04:30:31,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:31,338 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 04:30:31,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 04:30:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 04:30:31,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 04:30:31,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:30:31,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 04:30:32,455 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-22 04:30:33,811 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-22 04:30:34,170 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-22 04:30:35,810 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-22 04:30:36,853 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-22 04:30:38,024 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-22 04:30:38,868 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-22 04:30:39,035 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-22 04:30:39,208 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-22 04:30:39,381 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-22 04:30:40,027 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-22 04:30:41,197 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-22 04:30:41,759 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-22 04:30:41,919 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-22 04:30:42,066 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-22 04:30:42,573 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-22 04:30:43,345 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-22 04:30:43,515 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-22 04:30:43,704 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:43,864 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-22 04:30:44,634 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-22 04:30:44,906 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-22 04:30:45,086 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1