/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=DEEPEST --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_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:20:19,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:20:19,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:20:19,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:20:19,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:20:19,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:20:19,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:20:19,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:20:19,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:20:19,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:20:19,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:20:19,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:20:19,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:20:19,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:20:19,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:20:19,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:20:19,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:20:19,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:20:19,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:20:19,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:20:19,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:20:19,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:20:19,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:20:19,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:20:19,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:20:19,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:20:19,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:20:19,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:20:19,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:20:19,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:20:19,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:20:19,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:20:19,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:20:19,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:20:19,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:20:19,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:20:19,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:20:19,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:20:19,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:20:19,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:20:19,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:20:19,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:20:19,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:20:19,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:20:19,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:20:19,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:20:19,572 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:20:19,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:20:19,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:20:19,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:20:19,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:20:19,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:20:19,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:20:19,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:20:19,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:20:19,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:20:19,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:20:19,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:20:19,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:20:19,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:20:19,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:20:19,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:20:19,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:20:19,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:20:19,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:20:19,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:20:19,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:20:19,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:20:19,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:20:19,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:20:19,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:20:19,580 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:20:19,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:20:19,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:20:19,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:20:19,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:20:19,927 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:20:19,928 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-21 20:20:20,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29c1a16a/71d9b5f7ddc24d8785a25c6f013bfa5c/FLAG8bfb90915 [2020-08-21 20:20:20,582 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:20:20,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-21 20:20:20,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29c1a16a/71d9b5f7ddc24d8785a25c6f013bfa5c/FLAG8bfb90915 [2020-08-21 20:20:20,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29c1a16a/71d9b5f7ddc24d8785a25c6f013bfa5c [2020-08-21 20:20:20,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:20:20,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:20:20,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:20:20,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:20:20,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:20:20,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:20:20" (1/1) ... [2020-08-21 20:20:20,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d7d7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:20, skipping insertion in model container [2020-08-21 20:20:20,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:20:20" (1/1) ... [2020-08-21 20:20:20,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:20:20,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:20:21,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:20:21,399 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:20:21,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:20:21,550 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:20:21,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21 WrapperNode [2020-08-21 20:20:21,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:20:21,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:20:21,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:20:21,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:20:21,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (1/1) ... [2020-08-21 20:20:21,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (1/1) ... [2020-08-21 20:20:21,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (1/1) ... [2020-08-21 20:20:21,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (1/1) ... [2020-08-21 20:20:21,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (1/1) ... [2020-08-21 20:20:21,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (1/1) ... [2020-08-21 20:20:21,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (1/1) ... [2020-08-21 20:20:21,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:20:21,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:20:21,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:20:21,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:20:21,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:20:21,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:20:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:20:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:20:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:20:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:20:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:20:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:20:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:20:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:20:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:20:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:20:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:20:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:20:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 20:20:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 20:20:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:20:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 20:20:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:20:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:20:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:20:21,710 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:20:21,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:20:21,710 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:20:21,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:20:21,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 20:20:21,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 20:20:21,711 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:20:21,711 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:20:21,711 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:20:21,711 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:20:21,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:20:21,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:20:21,711 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:20:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 20:20:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 20:20:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:20:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:20:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:20:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:20:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:20:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:20:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:20:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:20:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:20:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:20:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:20:21,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:20:21,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:20:21,714 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:20:21,714 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:20:21,714 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:20:21,714 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:20:21,714 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:20:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:20:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:20:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 20:20:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 20:20:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:20:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:20:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:20:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 20:20:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:20:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:20:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:20:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:20:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:20:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:20:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:20:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:20:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:20:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:20:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:20:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 20:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 20:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 20:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 20:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:20:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:20:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:20:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:20:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:20:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:20:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:20:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:20:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:20:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:20:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:20:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:20:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:20:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:20:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:20:22,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:20:22,910 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:20:22,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:20:22 BoogieIcfgContainer [2020-08-21 20:20:22,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:20:22,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:20:22,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:20:22,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:20:22,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:20:20" (1/3) ... [2020-08-21 20:20:22,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b556a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:20:22, skipping insertion in model container [2020-08-21 20:20:22,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:20:21" (2/3) ... [2020-08-21 20:20:22,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b556a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:20:22, skipping insertion in model container [2020-08-21 20:20:22,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:20:22" (3/3) ... [2020-08-21 20:20:22,924 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2020-08-21 20:20:22,934 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:20:22,942 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:20:22,956 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:20:22,982 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:20:22,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:20:22,982 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:20:22,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:20:22,983 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:20:22,983 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:20:22,983 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:20:22,983 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:20:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2020-08-21 20:20:23,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 20:20:23,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:23,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:23,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:23,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1301923028, now seen corresponding path program 1 times [2020-08-21 20:20:23,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:23,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066619686] [2020-08-21 20:20:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:23,684 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:23,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:23,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:23,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:23,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:23,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:23,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:20:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:23,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:20:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:20:23,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066619686] [2020-08-21 20:20:23,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:23,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:20:23,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532902269] [2020-08-21 20:20:23,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:20:23,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:23,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:20:23,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:20:23,788 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2020-08-21 20:20:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:25,050 INFO L93 Difference]: Finished difference Result 345 states and 451 transitions. [2020-08-21 20:20:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:20:25,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 20:20:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:25,069 INFO L225 Difference]: With dead ends: 345 [2020-08-21 20:20:25,069 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 20:20:25,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:20:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 20:20:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-21 20:20:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-21 20:20:25,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-08-21 20:20:25,179 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 46 [2020-08-21 20:20:25,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:25,180 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-08-21 20:20:25,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:20:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-08-21 20:20:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 20:20:25,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:25,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:25,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:20:25,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:25,185 INFO L82 PathProgramCache]: Analyzing trace with hash -216566915, now seen corresponding path program 1 times [2020-08-21 20:20:25,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:25,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537047319] [2020-08-21 20:20:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:25,558 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:25,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:25,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:25,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:20:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:20:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:20:25,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537047319] [2020-08-21 20:20:25,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:25,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:20:25,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598796364] [2020-08-21 20:20:25,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:20:25,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:25,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:20:25,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:20:25,604 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2020-08-21 20:20:26,053 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:27,064 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2020-08-21 20:20:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:20:27,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 20:20:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:27,069 INFO L225 Difference]: With dead ends: 278 [2020-08-21 20:20:27,069 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 20:20:27,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:20:27,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 20:20:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-21 20:20:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-21 20:20:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2020-08-21 20:20:27,145 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 47 [2020-08-21 20:20:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:27,146 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2020-08-21 20:20:27,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:20:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2020-08-21 20:20:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 20:20:27,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:27,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:27,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:20:27,149 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:27,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:27,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1163721234, now seen corresponding path program 1 times [2020-08-21 20:20:27,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:27,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839961702] [2020-08-21 20:20:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,448 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:27,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:20:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:20:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:20:27,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839961702] [2020-08-21 20:20:27,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:27,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:20:27,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147598877] [2020-08-21 20:20:27,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:20:27,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:27,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:20:27,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:20:27,553 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 8 states. [2020-08-21 20:20:27,959 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:28,289 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:28,519 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:28,740 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:30,058 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2020-08-21 20:20:30,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:20:30,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 20:20:30,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:30,066 INFO L225 Difference]: With dead ends: 287 [2020-08-21 20:20:30,066 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 20:20:30,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:20:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 20:20:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-21 20:20:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-21 20:20:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-08-21 20:20:30,103 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 51 [2020-08-21 20:20:30,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:30,104 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-08-21 20:20:30,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:20:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-08-21 20:20:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 20:20:30,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:30,107 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] [2020-08-21 20:20:30,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:20:30,107 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:30,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1315506319, now seen corresponding path program 1 times [2020-08-21 20:20:30,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:30,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881071627] [2020-08-21 20:20:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,431 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:30,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 20:20:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 20:20:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 20:20:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:20:30,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881071627] [2020-08-21 20:20:30,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:30,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:20:30,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390195973] [2020-08-21 20:20:30,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:20:30,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:30,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:20:30,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:20:30,567 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 6 states. [2020-08-21 20:20:30,967 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:32,051 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:32,760 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2020-08-21 20:20:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:20:32,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-21 20:20:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:32,765 INFO L225 Difference]: With dead ends: 390 [2020-08-21 20:20:32,765 INFO L226 Difference]: Without dead ends: 273 [2020-08-21 20:20:32,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:20:32,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-21 20:20:32,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2020-08-21 20:20:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-21 20:20:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2020-08-21 20:20:32,813 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 69 [2020-08-21 20:20:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:32,814 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2020-08-21 20:20:32,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:20:32,814 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2020-08-21 20:20:32,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 20:20:32,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:32,817 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] [2020-08-21 20:20:32,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:20:32,817 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:32,818 INFO L82 PathProgramCache]: Analyzing trace with hash -921409892, now seen corresponding path program 1 times [2020-08-21 20:20:32,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:32,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301177588] [2020-08-21 20:20:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,133 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 20:20:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 20:20:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 20:20:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:20:33,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301177588] [2020-08-21 20:20:33,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:33,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:20:33,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215688971] [2020-08-21 20:20:33,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:20:33,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:33,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:20:33,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:20:33,236 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand 8 states. [2020-08-21 20:20:33,846 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:34,820 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:35,162 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:35,738 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:35,964 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:36,213 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:37,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:37,356 INFO L93 Difference]: Finished difference Result 691 states and 842 transitions. [2020-08-21 20:20:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:20:37,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-21 20:20:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:37,363 INFO L225 Difference]: With dead ends: 691 [2020-08-21 20:20:37,364 INFO L226 Difference]: Without dead ends: 483 [2020-08-21 20:20:37,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:20:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-21 20:20:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 419. [2020-08-21 20:20:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-21 20:20:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2020-08-21 20:20:37,452 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 83 [2020-08-21 20:20:37,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:37,453 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2020-08-21 20:20:37,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:20:37,453 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2020-08-21 20:20:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 20:20:37,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:37,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:37,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:20:37,456 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash 592685792, now seen corresponding path program 1 times [2020-08-21 20:20:37,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:37,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475761094] [2020-08-21 20:20:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,755 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:20:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:20:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 20:20:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 20:20:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:20:37,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475761094] [2020-08-21 20:20:37,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:37,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:20:37,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859766691] [2020-08-21 20:20:37,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:20:37,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:37,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:20:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:20:37,924 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand 9 states. [2020-08-21 20:20:38,341 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:39,496 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:39,748 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:40,795 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:41,039 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:41,261 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:41,556 INFO L93 Difference]: Finished difference Result 522 states and 646 transitions. [2020-08-21 20:20:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 20:20:41,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-21 20:20:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:41,561 INFO L225 Difference]: With dead ends: 522 [2020-08-21 20:20:41,561 INFO L226 Difference]: Without dead ends: 519 [2020-08-21 20:20:41,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:20:41,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-21 20:20:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 419. [2020-08-21 20:20:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-21 20:20:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2020-08-21 20:20:41,642 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 87 [2020-08-21 20:20:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:41,643 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2020-08-21 20:20:41,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:20:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2020-08-21 20:20:41,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 20:20:41,645 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:41,645 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, 1, 1, 1, 1] [2020-08-21 20:20:41,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:20:41,645 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:41,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:41,646 INFO L82 PathProgramCache]: Analyzing trace with hash -88143431, now seen corresponding path program 1 times [2020-08-21 20:20:41,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:41,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104405377] [2020-08-21 20:20:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,911 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:41,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:20:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:20:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:20:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 20:20:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:20:42,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104405377] [2020-08-21 20:20:42,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:42,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:20:42,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516537561] [2020-08-21 20:20:42,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:20:42,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:42,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:20:42,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:20:42,058 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand 9 states. [2020-08-21 20:20:42,948 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:43,196 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:43,436 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:43,670 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:44,951 INFO L93 Difference]: Finished difference Result 922 states and 1136 transitions. [2020-08-21 20:20:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:20:44,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-08-21 20:20:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:44,956 INFO L225 Difference]: With dead ends: 922 [2020-08-21 20:20:44,956 INFO L226 Difference]: Without dead ends: 527 [2020-08-21 20:20:44,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:20:44,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-08-21 20:20:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 429. [2020-08-21 20:20:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-21 20:20:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 487 transitions. [2020-08-21 20:20:45,068 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 487 transitions. Word has length 103 [2020-08-21 20:20:45,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:45,068 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 487 transitions. [2020-08-21 20:20:45,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:20:45,069 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 487 transitions. [2020-08-21 20:20:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 20:20:45,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:45,074 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, 1, 1, 1, 1] [2020-08-21 20:20:45,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:20:45,075 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:45,075 INFO L82 PathProgramCache]: Analyzing trace with hash -441231813, now seen corresponding path program 1 times [2020-08-21 20:20:45,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:45,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265148436] [2020-08-21 20:20:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,360 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:20:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:20:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:20:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 20:20:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:20:45,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265148436] [2020-08-21 20:20:45,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:45,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 20:20:45,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344725461] [2020-08-21 20:20:45,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 20:20:45,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:45,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 20:20:45,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:20:45,548 INFO L87 Difference]: Start difference. First operand 429 states and 487 transitions. Second operand 11 states. [2020-08-21 20:20:46,630 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:46,879 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:47,121 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:47,752 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:48,024 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:48,268 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:49,665 INFO L93 Difference]: Finished difference Result 942 states and 1158 transitions. [2020-08-21 20:20:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:20:49,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-08-21 20:20:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:49,670 INFO L225 Difference]: With dead ends: 942 [2020-08-21 20:20:49,670 INFO L226 Difference]: Without dead ends: 537 [2020-08-21 20:20:49,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:20:49,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-21 20:20:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 437. [2020-08-21 20:20:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-21 20:20:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 495 transitions. [2020-08-21 20:20:49,776 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 495 transitions. Word has length 103 [2020-08-21 20:20:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:49,776 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 495 transitions. [2020-08-21 20:20:49,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 20:20:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 495 transitions. [2020-08-21 20:20:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 20:20:49,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:49,781 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, 1, 1, 1, 1] [2020-08-21 20:20:49,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:20:49,781 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:49,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:49,781 INFO L82 PathProgramCache]: Analyzing trace with hash 691958780, now seen corresponding path program 1 times [2020-08-21 20:20:49,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:49,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266338757] [2020-08-21 20:20:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,054 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:50,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:20:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:20:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:20:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 20:20:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:20:50,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266338757] [2020-08-21 20:20:50,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:50,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:20:50,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115763561] [2020-08-21 20:20:50,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:20:50,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:50,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:20:50,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:20:50,217 INFO L87 Difference]: Start difference. First operand 437 states and 495 transitions. Second operand 7 states. [2020-08-21 20:20:50,686 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:51,162 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:53,479 INFO L93 Difference]: Finished difference Result 1265 states and 1606 transitions. [2020-08-21 20:20:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:20:53,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-08-21 20:20:53,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:53,485 INFO L225 Difference]: With dead ends: 1265 [2020-08-21 20:20:53,485 INFO L226 Difference]: Without dead ends: 852 [2020-08-21 20:20:53,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:20:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-21 20:20:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 753. [2020-08-21 20:20:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-08-21 20:20:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 889 transitions. [2020-08-21 20:20:53,622 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 889 transitions. Word has length 103 [2020-08-21 20:20:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:53,622 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 889 transitions. [2020-08-21 20:20:53,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:20:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 889 transitions. [2020-08-21 20:20:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 20:20:53,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:53,625 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:53,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:20:53,625 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:53,625 INFO L82 PathProgramCache]: Analyzing trace with hash -867723262, now seen corresponding path program 1 times [2020-08-21 20:20:53,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:53,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615168558] [2020-08-21 20:20:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:53,928 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:53,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:53,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:53,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:20:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 20:20:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:20:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 20:20:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 20:20:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 20:20:54,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615168558] [2020-08-21 20:20:54,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:20:54,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 20:20:54,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379484834] [2020-08-21 20:20:54,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 20:20:54,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:54,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 20:20:54,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 20:20:54,518 INFO L87 Difference]: Start difference. First operand 753 states and 889 transitions. Second operand 17 states. [2020-08-21 20:20:55,320 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:55,646 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:20:55,903 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:56,146 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:56,760 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:57,771 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:58,079 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:58,363 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:58,633 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:58,974 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:59,272 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:59,786 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 20:21:00,348 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 20:21:02,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:21:02,778 INFO L93 Difference]: Finished difference Result 1548 states and 1897 transitions. [2020-08-21 20:21:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 20:21:02,779 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-08-21 20:21:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:21:02,784 INFO L225 Difference]: With dead ends: 1548 [2020-08-21 20:21:02,784 INFO L226 Difference]: Without dead ends: 819 [2020-08-21 20:21:02,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 20:21:02,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-21 20:21:02,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 723. [2020-08-21 20:21:02,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-08-21 20:21:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 840 transitions. [2020-08-21 20:21:02,938 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 840 transitions. Word has length 107 [2020-08-21 20:21:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:21:02,938 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 840 transitions. [2020-08-21 20:21:02,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 20:21:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 840 transitions. [2020-08-21 20:21:02,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-21 20:21:02,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:21:02,945 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:21:02,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:21:02,946 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:21:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:21:02,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1713415852, now seen corresponding path program 1 times [2020-08-21 20:21:02,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:21:02,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601872486] [2020-08-21 20:21:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:21:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,310 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:21:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:21:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:21:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:21:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:21:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:21:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:21:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:21:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:21:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:21:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:21:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:21:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:21:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:21:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:21:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:21:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:21:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:21:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:21:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 20:21:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 20:21:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 20:21:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:21:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:21:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 20:21:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:21:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:21:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:21:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:21:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-21 20:21:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-21 20:21:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:21:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 20:21:03,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601872486] [2020-08-21 20:21:03,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:21:03,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 20:21:03,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147743469] [2020-08-21 20:21:03,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 20:21:03,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:21:03,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 20:21:03,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:21:03,677 INFO L87 Difference]: Start difference. First operand 723 states and 840 transitions. Second operand 18 states. [2020-08-21 20:21:04,632 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:21:04,990 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:21:05,241 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:21:05,477 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:21:06,100 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:21:07,069 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:07,379 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:07,645 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:07,893 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:08,228 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:08,498 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:09,548 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:09,788 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:10,095 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:10,348 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:21:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:21:11,425 INFO L93 Difference]: Finished difference Result 1309 states and 1611 transitions. [2020-08-21 20:21:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 20:21:11,429 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 176 [2020-08-21 20:21:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:21:11,431 INFO L225 Difference]: With dead ends: 1309 [2020-08-21 20:21:11,431 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 20:21:11,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=347, Invalid=1633, Unknown=0, NotChecked=0, Total=1980 [2020-08-21 20:21:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 20:21:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 20:21:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 20:21:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 20:21:11,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-21 20:21:11,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:21:11,437 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 20:21:11,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 20:21:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 20:21:11,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 20:21:11,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:21:11,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 20:21:12,250 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-21 20:21:12,571 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-21 20:21:12,696 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-21 20:21:12,839 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-21 20:21:14,090 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-21 20:21:15,993 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-21 20:21:17,233 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 243 [2020-08-21 20:21:17,706 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-21 20:21:18,855 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-21 20:21:19,018 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1