/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:21:34,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:21:34,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:21:34,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:21:34,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:21:34,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:21:34,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:21:34,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:21:34,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:21:34,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:21:34,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:21:34,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:21:34,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:21:34,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:21:34,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:21:34,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:21:34,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:21:34,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:21:34,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:21:34,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:21:34,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:21:34,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:21:34,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:21:34,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:21:34,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:21:34,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:21:34,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:21:34,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:21:34,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:21:34,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:21:34,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:21:34,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:21:34,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:21:34,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:21:34,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:21:34,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:21:34,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:21:34,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:21:34,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:21:34,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:21:34,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:21:34,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:21:34,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:21:34,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:21:34,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:21:34,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:21:34,506 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:21:34,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:21:34,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:21:34,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:21:34,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:21:34,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:21:34,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:21:34,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:21:34,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:21:34,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:21:34,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:21:34,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:21:34,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:21:34,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:21:34,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:21:34,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:21:34,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:21:34,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:21:34,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:21:34,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:21:34,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:21:34,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:21:34,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:21:34,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:21:34,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:21:34,513 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 -> false [2020-08-18 15:21:34,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:21:34,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:21:34,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:21:34,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:21:34,833 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:21:34,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-18 15:21:34,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/078f31cc9/93fcf72cefde492a858bcb008101969f/FLAGac1142742 [2020-08-18 15:21:35,411 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:21:35,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-18 15:21:35,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/078f31cc9/93fcf72cefde492a858bcb008101969f/FLAGac1142742 [2020-08-18 15:21:35,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/078f31cc9/93fcf72cefde492a858bcb008101969f [2020-08-18 15:21:35,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:21:35,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:21:35,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:21:35,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:21:35,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:21:35,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b1378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35, skipping insertion in model container [2020-08-18 15:21:35,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:21:35,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:21:36,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:21:36,294 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:21:36,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:21:36,489 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:21:36,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36 WrapperNode [2020-08-18 15:21:36,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:21:36,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:21:36,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:21:36,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:21:36,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (1/1) ... [2020-08-18 15:21:36,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (1/1) ... [2020-08-18 15:21:36,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (1/1) ... [2020-08-18 15:21:36,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (1/1) ... [2020-08-18 15:21:36,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (1/1) ... [2020-08-18 15:21:36,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (1/1) ... [2020-08-18 15:21:36,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (1/1) ... [2020-08-18 15:21:36,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:21:36,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:21:36,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:21:36,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:21:36,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:21:36,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:21:36,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:21:36,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:21:36,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:21:36,646 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:21:36,646 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:21:36,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:21:36,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:21:36,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 15:21:36,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:21:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:21:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:21:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:21:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:21:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:21:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:21:36,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:21:36,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 15:21:36,648 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 15:21:36,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 15:21:36,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:21:36,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:21:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:21:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:21:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:21:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:21:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:21:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:21:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:21:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:21:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:21:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:21:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:21:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:21:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:21:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:21:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:21:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:21:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:21:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:21:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:21:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:21:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 15:21:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:21:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:21:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:21:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:21:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:21:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:21:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 15:21:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:21:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:21:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:21:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:21:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:21:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:21:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:21:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 15:21:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:21:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:21:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:21:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:21:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 15:21:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:21:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:21:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:21:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:21:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 15:21:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 15:21:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:21:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:21:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:21:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:21:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:21:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:21:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:21:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:21:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:21:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:21:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:21:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:21:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:21:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:21:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:21:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:21:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:21:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:21:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:21:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:21:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:21:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:21:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:21:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:21:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:21:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:21:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:21:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:21:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:21:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:21:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:21:37,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:21:37,795 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:21:37,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:21:37 BoogieIcfgContainer [2020-08-18 15:21:37,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:21:37,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:21:37,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:21:37,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:21:37,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:21:35" (1/3) ... [2020-08-18 15:21:37,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c5b28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:21:37, skipping insertion in model container [2020-08-18 15:21:37,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:36" (2/3) ... [2020-08-18 15:21:37,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c5b28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:21:37, skipping insertion in model container [2020-08-18 15:21:37,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:21:37" (3/3) ... [2020-08-18 15:21:37,809 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-08-18 15:21:37,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:21:37,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:21:37,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:21:37,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:21:37,866 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:21:37,866 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:21:37,866 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:21:37,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:21:37,867 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:21:37,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:21:37,867 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:21:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-18 15:21:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 15:21:37,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:37,901 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] [2020-08-18 15:21:37,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:37,908 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2020-08-18 15:21:37,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:37,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753160217] [2020-08-18 15:21:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:38,575 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:38,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:38,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:21:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:21:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:38,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753160217] [2020-08-18 15:21:38,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:38,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:21:38,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395375697] [2020-08-18 15:21:38,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:21:38,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:38,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:21:38,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:21:38,709 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2020-08-18 15:21:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:40,048 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2020-08-18 15:21:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:21:40,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 15:21:40,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:40,065 INFO L225 Difference]: With dead ends: 360 [2020-08-18 15:21:40,066 INFO L226 Difference]: Without dead ends: 194 [2020-08-18 15:21:40,071 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 [2020-08-18 15:21:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-18 15:21:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2020-08-18 15:21:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-18 15:21:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2020-08-18 15:21:40,202 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2020-08-18 15:21:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:40,202 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2020-08-18 15:21:40,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:21:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2020-08-18 15:21:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 15:21:40,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:40,206 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] [2020-08-18 15:21:40,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:21:40,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2020-08-18 15:21:40,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:40,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663618408] [2020-08-18 15:21:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:40,519 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:40,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:40,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:21:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:40,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663618408] [2020-08-18 15:21:40,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:40,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:21:40,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134459189] [2020-08-18 15:21:40,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:21:40,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:40,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:21:40,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:21:40,571 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2020-08-18 15:21:41,012 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:41,988 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2020-08-18 15:21:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:21:41,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 15:21:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:41,993 INFO L225 Difference]: With dead ends: 289 [2020-08-18 15:21:41,993 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 15:21:41,995 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 [2020-08-18 15:21:41,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 15:21:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-18 15:21:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 15:21:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2020-08-18 15:21:42,037 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2020-08-18 15:21:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:42,037 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2020-08-18 15:21:42,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:21:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2020-08-18 15:21:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:21:42,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:42,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:42,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:21:42,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2020-08-18 15:21:42,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:42,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049400452] [2020-08-18 15:21:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,379 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:42,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:21:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:21:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:42,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049400452] [2020-08-18 15:21:42,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:42,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:21:42,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585469637] [2020-08-18 15:21:42,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:21:42,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:42,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:21:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:21:42,500 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2020-08-18 15:21:42,900 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:43,182 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:43,415 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:43,654 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:45,025 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2020-08-18 15:21:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:21:45,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 15:21:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:45,029 INFO L225 Difference]: With dead ends: 302 [2020-08-18 15:21:45,029 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 15:21:45,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:21:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 15:21:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-18 15:21:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 15:21:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-08-18 15:21:45,071 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2020-08-18 15:21:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:45,071 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-08-18 15:21:45,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:21:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-08-18 15:21:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 15:21:45,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:45,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:45,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:21:45,075 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:45,075 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2020-08-18 15:21:45,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:45,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841871354] [2020-08-18 15:21:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,385 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:21:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 15:21:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 15:21:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:45,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841871354] [2020-08-18 15:21:45,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:45,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:21:45,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184783638] [2020-08-18 15:21:45,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:21:45,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:21:45,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:21:45,468 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2020-08-18 15:21:45,809 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:47,089 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:47,851 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2020-08-18 15:21:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:21:47,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-18 15:21:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:47,855 INFO L225 Difference]: With dead ends: 413 [2020-08-18 15:21:47,856 INFO L226 Difference]: Without dead ends: 289 [2020-08-18 15:21:47,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:21:47,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-18 15:21:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-08-18 15:21:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-18 15:21:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2020-08-18 15:21:47,909 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2020-08-18 15:21:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:47,910 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2020-08-18 15:21:47,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:21:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2020-08-18 15:21:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 15:21:47,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:47,912 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] [2020-08-18 15:21:47,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:21:47,913 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:47,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:47,913 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2020-08-18 15:21:47,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:47,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424716150] [2020-08-18 15:21:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,248 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:21:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:21:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 15:21:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 15:21:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:48,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424716150] [2020-08-18 15:21:48,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:48,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:21:48,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996911056] [2020-08-18 15:21:48,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:21:48,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:48,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:21:48,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:21:48,430 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2020-08-18 15:21:48,958 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:49,269 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:49,524 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:49,763 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:50,331 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:51,340 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:51,660 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:51,922 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:52,189 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:52,510 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:52,771 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:54,181 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:54,526 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:55,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:55,465 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2020-08-18 15:21:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:21:55,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 15:21:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:55,474 INFO L225 Difference]: With dead ends: 866 [2020-08-18 15:21:55,474 INFO L226 Difference]: Without dead ends: 644 [2020-08-18 15:21:55,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 15:21:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-18 15:21:55,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2020-08-18 15:21:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-08-18 15:21:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2020-08-18 15:21:55,602 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2020-08-18 15:21:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:55,603 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2020-08-18 15:21:55,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:21:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2020-08-18 15:21:55,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 15:21:55,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:55,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:55,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:21:55,608 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:55,608 INFO L82 PathProgramCache]: Analyzing trace with hash -295396841, now seen corresponding path program 1 times [2020-08-18 15:21:55,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:55,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507780333] [2020-08-18 15:21:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:55,918 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:55,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:55,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:55,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:21:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:55,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:21:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:21:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:21:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 15:21:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 15:21:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 15:21:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:21:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 15:21:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 15:21:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 15:21:56,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507780333] [2020-08-18 15:21:56,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:56,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:21:56,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820041553] [2020-08-18 15:21:56,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:21:56,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:56,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:21:56,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:21:56,176 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 13 states. [2020-08-18 15:21:57,125 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:57,900 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:58,436 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:58,707 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 15:21:58,979 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:59,231 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:59,482 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:59,769 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 15:22:00,047 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:00,304 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:02,228 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:02,459 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:22:02,687 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:02,933 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:03,538 INFO L93 Difference]: Finished difference Result 1164 states and 1458 transitions. [2020-08-18 15:22:03,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 15:22:03,539 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-08-18 15:22:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:03,544 INFO L225 Difference]: With dead ends: 1164 [2020-08-18 15:22:03,544 INFO L226 Difference]: Without dead ends: 606 [2020-08-18 15:22:03,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 15:22:03,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-08-18 15:22:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 533. [2020-08-18 15:22:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-08-18 15:22:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 619 transitions. [2020-08-18 15:22:03,653 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 619 transitions. Word has length 156 [2020-08-18 15:22:03,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:03,653 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 619 transitions. [2020-08-18 15:22:03,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:22:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 619 transitions. [2020-08-18 15:22:03,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 15:22:03,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:03,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:03,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:22:03,657 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:03,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:03,657 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2020-08-18 15:22:03,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:03,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175516441] [2020-08-18 15:22:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,933 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:22:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:22:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 15:22:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:22:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:22:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 15:22:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 15:22:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 15:22:04,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175516441] [2020-08-18 15:22:04,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:04,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:22:04,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113559221] [2020-08-18 15:22:04,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:22:04,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:04,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:22:04,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:22:04,187 INFO L87 Difference]: Start difference. First operand 533 states and 619 transitions. Second operand 12 states. [2020-08-18 15:22:04,786 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:05,040 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:05,265 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:05,908 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:06,139 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:06,364 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:07,577 INFO L93 Difference]: Finished difference Result 951 states and 1145 transitions. [2020-08-18 15:22:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:22:07,578 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 148 [2020-08-18 15:22:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:07,582 INFO L225 Difference]: With dead ends: 951 [2020-08-18 15:22:07,582 INFO L226 Difference]: Without dead ends: 442 [2020-08-18 15:22:07,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:22:07,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-18 15:22:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2020-08-18 15:22:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 15:22:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 483 transitions. [2020-08-18 15:22:07,660 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 483 transitions. Word has length 148 [2020-08-18 15:22:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:07,660 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 483 transitions. [2020-08-18 15:22:07,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:22:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 483 transitions. [2020-08-18 15:22:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 15:22:07,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:07,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:07,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:22:07,663 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:07,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2020-08-18 15:22:07,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:07,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729717271] [2020-08-18 15:22:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,914 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:22:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:22:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 15:22:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 15:22:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:22:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 15:22:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 15:22:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-18 15:22:08,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729717271] [2020-08-18 15:22:08,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:08,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:22:08,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738389816] [2020-08-18 15:22:08,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:22:08,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:08,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:22:08,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:22:08,129 INFO L87 Difference]: Start difference. First operand 416 states and 483 transitions. Second operand 13 states. [2020-08-18 15:22:08,830 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:09,532 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:10,510 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:10,807 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:11,070 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:11,320 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:11,621 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:11,898 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:13,078 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:13,308 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:13,574 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:13,806 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:14,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:14,578 INFO L93 Difference]: Finished difference Result 1172 states and 1412 transitions. [2020-08-18 15:22:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 15:22:14,579 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 15:22:14,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:14,584 INFO L225 Difference]: With dead ends: 1172 [2020-08-18 15:22:14,584 INFO L226 Difference]: Without dead ends: 780 [2020-08-18 15:22:14,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 15:22:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-18 15:22:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 738. [2020-08-18 15:22:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-08-18 15:22:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 848 transitions. [2020-08-18 15:22:14,729 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 848 transitions. Word has length 152 [2020-08-18 15:22:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:14,729 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 848 transitions. [2020-08-18 15:22:14,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:22:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 848 transitions. [2020-08-18 15:22:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 15:22:14,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:14,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:14,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:22:14,733 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash -508382690, now seen corresponding path program 1 times [2020-08-18 15:22:14,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:14,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042663603] [2020-08-18 15:22:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,034 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:22:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 15:22:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:22:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 15:22:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 15:22:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:22:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 15:22:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 15:22:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 15:22:15,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042663603] [2020-08-18 15:22:15,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:15,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 15:22:15,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164324692] [2020-08-18 15:22:15,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 15:22:15,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 15:22:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:22:15,486 INFO L87 Difference]: Start difference. First operand 738 states and 848 transitions. Second operand 18 states. [2020-08-18 15:22:16,043 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:16,352 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:16,601 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:16,834 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:17,458 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:18,558 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:18,908 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:19,189 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:19,465 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:19,812 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:20,101 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:20,658 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 15:22:21,181 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 15:22:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:23,331 INFO L93 Difference]: Finished difference Result 1398 states and 1701 transitions. [2020-08-18 15:22:23,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 15:22:23,335 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-08-18 15:22:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:23,341 INFO L225 Difference]: With dead ends: 1398 [2020-08-18 15:22:23,341 INFO L226 Difference]: Without dead ends: 820 [2020-08-18 15:22:23,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 15:22:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-18 15:22:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 700. [2020-08-18 15:22:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-18 15:22:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 801 transitions. [2020-08-18 15:22:23,480 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 801 transitions. Word has length 156 [2020-08-18 15:22:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:23,481 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 801 transitions. [2020-08-18 15:22:23,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 15:22:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 801 transitions. [2020-08-18 15:22:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 15:22:23,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:23,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:23,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:22:23,485 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:23,486 INFO L82 PathProgramCache]: Analyzing trace with hash -620136546, now seen corresponding path program 2 times [2020-08-18 15:22:23,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:23,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788633579] [2020-08-18 15:22:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,793 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:22:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:22:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 15:22:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 15:22:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 15:22:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:22:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 15:22:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 15:22:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-18 15:22:23,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788633579] [2020-08-18 15:22:23,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:23,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 15:22:23,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930639063] [2020-08-18 15:22:23,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:22:23,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:23,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:22:23,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:22:23,958 INFO L87 Difference]: Start difference. First operand 700 states and 801 transitions. Second operand 11 states. [2020-08-18 15:22:24,475 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:26,404 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:26,689 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:26,957 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:27,336 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:27,617 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:28,058 INFO L93 Difference]: Finished difference Result 826 states and 1019 transitions. [2020-08-18 15:22:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:22:28,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-08-18 15:22:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:28,064 INFO L225 Difference]: With dead ends: 826 [2020-08-18 15:22:28,064 INFO L226 Difference]: Without dead ends: 823 [2020-08-18 15:22:28,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:22:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-08-18 15:22:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 700. [2020-08-18 15:22:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-18 15:22:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 799 transitions. [2020-08-18 15:22:28,169 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 799 transitions. Word has length 156 [2020-08-18 15:22:28,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:28,170 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 799 transitions. [2020-08-18 15:22:28,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:22:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 799 transitions. [2020-08-18 15:22:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-18 15:22:28,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:28,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:28,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:22:28,174 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:28,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:28,174 INFO L82 PathProgramCache]: Analyzing trace with hash 350169461, now seen corresponding path program 1 times [2020-08-18 15:22:28,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:28,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499933596] [2020-08-18 15:22:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,456 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:22:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:22:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 15:22:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 15:22:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:22:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 15:22:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-18 15:22:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 15:22:28,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499933596] [2020-08-18 15:22:28,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:28,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:22:28,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68132774] [2020-08-18 15:22:28,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:22:28,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:28,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:22:28,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:22:28,768 INFO L87 Difference]: Start difference. First operand 700 states and 799 transitions. Second operand 12 states. [2020-08-18 15:22:29,317 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:30,167 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:30,743 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:31,012 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:22:31,261 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:22:31,513 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:31,791 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:22:32,071 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:22:33,849 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:34,127 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:34,978 INFO L93 Difference]: Finished difference Result 1666 states and 2029 transitions. [2020-08-18 15:22:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 15:22:34,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 174 [2020-08-18 15:22:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:34,987 INFO L225 Difference]: With dead ends: 1666 [2020-08-18 15:22:34,987 INFO L226 Difference]: Without dead ends: 1126 [2020-08-18 15:22:34,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 15:22:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-08-18 15:22:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 971. [2020-08-18 15:22:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-08-18 15:22:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1123 transitions. [2020-08-18 15:22:35,186 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1123 transitions. Word has length 174 [2020-08-18 15:22:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:35,186 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1123 transitions. [2020-08-18 15:22:35,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:22:35,186 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1123 transitions. [2020-08-18 15:22:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-18 15:22:35,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:35,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 15:22:35,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:22:35,193 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:35,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1949464188, now seen corresponding path program 2 times [2020-08-18 15:22:35,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:35,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939963148] [2020-08-18 15:22:35,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,470 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:22:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:22:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 15:22:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat