/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -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 17:46:18,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:46:18,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:46:18,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:46:18,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:46:18,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:46:18,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:46:18,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:46:18,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:46:18,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:46:18,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:46:18,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:46:18,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:46:18,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:46:18,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:46:18,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:46:18,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:46:18,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:46:18,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:46:18,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:46:18,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:46:18,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:46:18,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:46:18,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:46:18,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:46:18,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:46:18,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:46:18,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:46:18,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:46:18,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:46:18,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:46:18,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:46:18,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:46:18,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:46:18,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:46:18,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:46:18,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:46:18,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:46:18,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:46:18,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:46:18,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:46:18,470 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 17:46:18,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:46:18,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:46:18,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:46:18,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:46:18,493 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:46:18,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:46:18,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:46:18,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:46:18,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:46:18,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:46:18,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:46:18,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:46:18,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:46:18,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:46:18,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:46:18,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:46:18,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:46:18,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:46:18,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:46:18,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:46:18,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:46:18,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:46:18,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:46:18,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:46:18,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:46:18,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:46:18,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:46:18,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:46:18,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:46:18,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:46:18,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:46:18,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:46:18,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:46:18,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:46:18,841 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:46:18,842 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-18 17:46:18,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60145a7d6/3b7b3c7fa09d4771b5610dc58eeb6e9e/FLAGafbd6f9c3 [2020-08-18 17:46:19,409 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:46:19,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-18 17:46:19,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60145a7d6/3b7b3c7fa09d4771b5610dc58eeb6e9e/FLAGafbd6f9c3 [2020-08-18 17:46:19,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60145a7d6/3b7b3c7fa09d4771b5610dc58eeb6e9e [2020-08-18 17:46:19,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:46:19,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:46:19,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:46:19,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:46:19,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:46:19,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:46:19" (1/1) ... [2020-08-18 17:46:19,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32cd08e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:19, skipping insertion in model container [2020-08-18 17:46:19,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:46:19" (1/1) ... [2020-08-18 17:46:19,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:46:19,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:46:20,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:46:20,273 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:46:20,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:46:20,474 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:46:20,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20 WrapperNode [2020-08-18 17:46:20,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:46:20,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:46:20,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:46:20,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:46:20,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (1/1) ... [2020-08-18 17:46:20,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (1/1) ... [2020-08-18 17:46:20,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (1/1) ... [2020-08-18 17:46:20,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (1/1) ... [2020-08-18 17:46:20,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (1/1) ... [2020-08-18 17:46:20,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (1/1) ... [2020-08-18 17:46:20,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (1/1) ... [2020-08-18 17:46:20,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:46:20,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:46:20,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:46:20,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:46:20,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (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 17:46:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:46:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:46:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:46:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:46:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:46:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:46:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:46:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:46:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 17:46:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:46:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 17:46:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:46:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:46:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:46:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:46:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:46:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:46:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 17:46:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 17:46:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 17:46:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:46:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:46:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:46:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:46:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:46:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:46:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:46:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:46:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:46:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:46:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:46:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:46:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:46:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:46:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:46:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:46:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:46:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:46:20,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:46:20,655 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:46:20,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:46:20,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:46:20,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 17:46:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:46:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:46:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:46:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:46:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:46:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:46:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 17:46:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:46:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:46:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:46:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:46:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:46:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:46:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:46:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 17:46:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:46:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:46:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:46:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:46:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 17:46:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:46:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:46:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:46:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:46:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 17:46:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 17:46:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:46:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 17:46:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:46:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:46:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:46:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:46:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:46:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:46:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:46:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:46:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:46:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:46:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:46:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:46:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:46:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:46:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:46:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:46:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:46:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:46:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:46:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:46:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:46:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:46:20,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:46:20,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:46:20,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:46:20,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:46:20,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:46:20,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:46:20,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:46:21,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:46:21,861 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:46:21,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:46:21 BoogieIcfgContainer [2020-08-18 17:46:21,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:46:21,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:46:21,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:46:21,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:46:21,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:46:19" (1/3) ... [2020-08-18 17:46:21,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e814b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:46:21, skipping insertion in model container [2020-08-18 17:46:21,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:20" (2/3) ... [2020-08-18 17:46:21,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e814b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:46:21, skipping insertion in model container [2020-08-18 17:46:21,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:46:21" (3/3) ... [2020-08-18 17:46:21,882 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-08-18 17:46:21,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:46:21,902 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:46:21,916 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:46:21,941 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:46:21,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:46:21,942 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:46:21,942 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:46:21,942 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:46:21,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:46:21,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:46:21,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:46:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-18 17:46:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 17:46:21,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:21,978 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 17:46:21,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:21,984 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2020-08-18 17:46:21,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:21,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322144851] [2020-08-18 17:46:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:22,584 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:22,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:22,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:46:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:22,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:46:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:22,718 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 17:46:22,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322144851] [2020-08-18 17:46:22,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:22,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:46:22,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516045334] [2020-08-18 17:46:22,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:46:22,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:22,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:46:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:46:22,748 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2020-08-18 17:46:24,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:24,152 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2020-08-18 17:46:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:46:24,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 17:46:24,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:24,169 INFO L225 Difference]: With dead ends: 360 [2020-08-18 17:46:24,169 INFO L226 Difference]: Without dead ends: 194 [2020-08-18 17:46:24,175 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 17:46:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-18 17:46:24,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2020-08-18 17:46:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-18 17:46:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2020-08-18 17:46:24,276 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2020-08-18 17:46:24,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:24,277 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2020-08-18 17:46:24,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 17:46:24,277 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2020-08-18 17:46:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 17:46:24,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:24,281 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 17:46:24,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:46:24,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:24,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2020-08-18 17:46:24,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:24,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587343255] [2020-08-18 17:46:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:24,596 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:46:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 17:46:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:24,639 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 17:46:24,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587343255] [2020-08-18 17:46:24,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:24,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:46:24,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063549998] [2020-08-18 17:46:24,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:46:24,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:24,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:46:24,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:46:24,643 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2020-08-18 17:46:25,084 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:26,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:26,145 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2020-08-18 17:46:26,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:46:26,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 17:46:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:26,150 INFO L225 Difference]: With dead ends: 289 [2020-08-18 17:46:26,150 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 17:46:26,152 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 17:46:26,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 17:46:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-18 17:46:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 17:46:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2020-08-18 17:46:26,195 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2020-08-18 17:46:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:26,195 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2020-08-18 17:46:26,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:46:26,196 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2020-08-18 17:46:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 17:46:26,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:26,198 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 17:46:26,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:46:26,198 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:26,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2020-08-18 17:46:26,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:26,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513351821] [2020-08-18 17:46:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,556 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:26,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:46:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:46:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,680 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 17:46:26,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513351821] [2020-08-18 17:46:26,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:26,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:46:26,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888262437] [2020-08-18 17:46:26,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:46:26,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:26,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:46:26,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:46:26,683 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2020-08-18 17:46:27,116 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:27,419 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:27,700 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:27,959 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:29,436 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2020-08-18 17:46:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:46:29,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 17:46:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:29,442 INFO L225 Difference]: With dead ends: 302 [2020-08-18 17:46:29,442 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 17:46:29,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:46:29,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 17:46:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-18 17:46:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 17:46:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-08-18 17:46:29,496 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2020-08-18 17:46:29,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:29,496 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-08-18 17:46:29,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:46:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-08-18 17:46:29,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 17:46:29,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:29,500 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 17:46:29,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:46:29,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:29,501 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2020-08-18 17:46:29,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:29,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193141156] [2020-08-18 17:46:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,782 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:29,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:46:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 17:46:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 17:46:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,930 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 17:46:29,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193141156] [2020-08-18 17:46:29,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:29,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:46:29,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260403023] [2020-08-18 17:46:29,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:46:29,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:29,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:46:29,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:46:29,934 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2020-08-18 17:46:30,281 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:31,640 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:32,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:32,390 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2020-08-18 17:46:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:46:32,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-18 17:46:32,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:32,397 INFO L225 Difference]: With dead ends: 413 [2020-08-18 17:46:32,398 INFO L226 Difference]: Without dead ends: 289 [2020-08-18 17:46:32,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:46:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-18 17:46:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-08-18 17:46:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-18 17:46:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2020-08-18 17:46:32,450 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2020-08-18 17:46:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:32,450 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2020-08-18 17:46:32,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:46:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2020-08-18 17:46:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 17:46:32,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:32,454 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 17:46:32,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:46:32,454 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2020-08-18 17:46:32,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:32,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103586252] [2020-08-18 17:46:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,843 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:46:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 17:46:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 17:46:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:32,956 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 17:46:32,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103586252] [2020-08-18 17:46:32,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:32,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:46:32,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761949299] [2020-08-18 17:46:32,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:46:32,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:46:32,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:46:32,959 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2020-08-18 17:46:33,510 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:33,839 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:34,094 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:34,328 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:34,889 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:35,896 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:36,240 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:36,484 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:36,767 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:37,098 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:37,349 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:38,828 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:39,185 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:40,066 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2020-08-18 17:46:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 17:46:40,066 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 17:46:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:40,072 INFO L225 Difference]: With dead ends: 866 [2020-08-18 17:46:40,072 INFO L226 Difference]: Without dead ends: 644 [2020-08-18 17:46:40,074 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 17:46:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-18 17:46:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2020-08-18 17:46:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-08-18 17:46:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2020-08-18 17:46:40,187 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2020-08-18 17:46:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:40,187 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2020-08-18 17:46:40,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:46:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2020-08-18 17:46:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 17:46:40,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:40,192 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 17:46:40,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:46:40,193 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:40,193 INFO L82 PathProgramCache]: Analyzing trace with hash -295396841, now seen corresponding path program 1 times [2020-08-18 17:46:40,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:40,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792928489] [2020-08-18 17:46:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,459 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:46:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:46:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:46:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 17:46:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 17:46:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 17:46:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:46:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 17:46:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 17:46:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:40,708 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 17:46:40,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792928489] [2020-08-18 17:46:40,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:40,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 17:46:40,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763991110] [2020-08-18 17:46:40,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 17:46:40,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:40,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 17:46:40,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 17:46:40,711 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 13 states. [2020-08-18 17:46:41,214 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:41,826 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:42,426 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:42,706 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:46:43,001 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:43,281 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:43,532 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:43,804 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:46:44,070 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:44,319 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:46,299 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:46,537 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:46:46,774 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:47,019 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:47,655 INFO L93 Difference]: Finished difference Result 1164 states and 1458 transitions. [2020-08-18 17:46:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 17:46:47,656 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-08-18 17:46:47,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:47,661 INFO L225 Difference]: With dead ends: 1164 [2020-08-18 17:46:47,662 INFO L226 Difference]: Without dead ends: 606 [2020-08-18 17:46:47,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 17:46:47,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-08-18 17:46:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 533. [2020-08-18 17:46:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-08-18 17:46:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 619 transitions. [2020-08-18 17:46:47,755 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 619 transitions. Word has length 156 [2020-08-18 17:46:47,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:47,755 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 619 transitions. [2020-08-18 17:46:47,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 17:46:47,756 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 619 transitions. [2020-08-18 17:46:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 17:46:47,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:47,759 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 17:46:47,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:46:47,759 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:47,760 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2020-08-18 17:46:47,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:47,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456859528] [2020-08-18 17:46:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,039 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:46:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:46:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 17:46:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 17:46:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:46:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 17:46:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 17:46:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:48,296 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 17:46:48,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456859528] [2020-08-18 17:46:48,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:48,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 17:46:48,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157034332] [2020-08-18 17:46:48,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:46:48,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:48,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:46:48,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:46:48,299 INFO L87 Difference]: Start difference. First operand 533 states and 619 transitions. Second operand 12 states. [2020-08-18 17:46:48,913 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:49,147 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:49,393 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:50,025 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:50,272 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:50,507 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:51,749 INFO L93 Difference]: Finished difference Result 951 states and 1145 transitions. [2020-08-18 17:46:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:46:51,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 148 [2020-08-18 17:46:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:51,754 INFO L225 Difference]: With dead ends: 951 [2020-08-18 17:46:51,754 INFO L226 Difference]: Without dead ends: 442 [2020-08-18 17:46:51,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:46:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-18 17:46:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2020-08-18 17:46:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 17:46:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 483 transitions. [2020-08-18 17:46:51,834 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 483 transitions. Word has length 148 [2020-08-18 17:46:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:51,834 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 483 transitions. [2020-08-18 17:46:51,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:46:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 483 transitions. [2020-08-18 17:46:51,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 17:46:51,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:51,837 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 17:46:51,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:46:51,837 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:51,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2020-08-18 17:46:51,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:51,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805348923] [2020-08-18 17:46:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,153 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:46:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:46:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:46:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 17:46:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 17:46:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:46:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 17:46:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 17:46:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:52,450 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 17:46:52,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805348923] [2020-08-18 17:46:52,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:52,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 17:46:52,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416372542] [2020-08-18 17:46:52,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 17:46:52,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:52,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 17:46:52,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 17:46:52,453 INFO L87 Difference]: Start difference. First operand 416 states and 483 transitions. Second operand 13 states. [2020-08-18 17:46:53,301 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:54,150 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:55,211 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:55,528 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:55,822 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:56,083 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:56,411 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:56,680 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:57,930 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:58,162 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:58,423 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:58,644 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:59,500 INFO L93 Difference]: Finished difference Result 1172 states and 1412 transitions. [2020-08-18 17:46:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 17:46:59,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 17:46:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:59,507 INFO L225 Difference]: With dead ends: 1172 [2020-08-18 17:46:59,507 INFO L226 Difference]: Without dead ends: 780 [2020-08-18 17:46:59,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 17:46:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-18 17:46:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 738. [2020-08-18 17:46:59,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-08-18 17:46:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 848 transitions. [2020-08-18 17:46:59,664 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 848 transitions. Word has length 152 [2020-08-18 17:46:59,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:59,664 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 848 transitions. [2020-08-18 17:46:59,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 17:46:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 848 transitions. [2020-08-18 17:46:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 17:46:59,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:59,668 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 17:46:59,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:46:59,668 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:59,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:59,669 INFO L82 PathProgramCache]: Analyzing trace with hash -508382690, now seen corresponding path program 1 times [2020-08-18 17:46:59,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:59,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112256549] [2020-08-18 17:46:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:59,968 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:47:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:47:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:47:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:47:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:47:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:47:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:47:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 17:47:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 17:47:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:47:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 17:47:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 17:47:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:00,479 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 17:47:00,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112256549] [2020-08-18 17:47:00,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:47:00,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 17:47:00,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703652009] [2020-08-18 17:47:00,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 17:47:00,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:47:00,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 17:47:00,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:47:00,486 INFO L87 Difference]: Start difference. First operand 738 states and 848 transitions. Second operand 18 states. [2020-08-18 17:47:01,637 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:47:01,967 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:02,242 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:02,519 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:03,183 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:47:04,388 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:04,751 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:05,062 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:05,364 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:05,722 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:06,026 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:06,623 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 17:47:07,183 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 17:47:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:47:09,281 INFO L93 Difference]: Finished difference Result 1398 states and 1701 transitions. [2020-08-18 17:47:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 17:47:09,281 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-08-18 17:47:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:47:09,287 INFO L225 Difference]: With dead ends: 1398 [2020-08-18 17:47:09,287 INFO L226 Difference]: Without dead ends: 820 [2020-08-18 17:47:09,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 17:47:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-18 17:47:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 700. [2020-08-18 17:47:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-18 17:47:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 801 transitions. [2020-08-18 17:47:09,424 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 801 transitions. Word has length 156 [2020-08-18 17:47:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:47:09,425 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 801 transitions. [2020-08-18 17:47:09,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 17:47:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 801 transitions. [2020-08-18 17:47:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 17:47:09,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:47:09,429 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 17:47:09,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:47:09,430 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:47:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:47:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash -620136546, now seen corresponding path program 2 times [2020-08-18 17:47:09,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:47:09,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382503748] [2020-08-18 17:47:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:47:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,758 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:47:09,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:47:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:47:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:47:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:47:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:47:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:47:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:47:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:47:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:47:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:47:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 17:47:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 17:47:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 17:47:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:47:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 17:47:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 17:47:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:10,008 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 17:47:10,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382503748] [2020-08-18 17:47:10,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:47:10,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 17:47:10,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661407607] [2020-08-18 17:47:10,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 17:47:10,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:47:10,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 17:47:10,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:47:10,013 INFO L87 Difference]: Start difference. First operand 700 states and 801 transitions. Second operand 11 states. [2020-08-18 17:47:10,520 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:47:12,400 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:47:12,689 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:47:12,944 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:47:13,347 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:47:13,610 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:47:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:47:13,988 INFO L93 Difference]: Finished difference Result 826 states and 1019 transitions. [2020-08-18 17:47:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 17:47:13,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-08-18 17:47:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:47:13,996 INFO L225 Difference]: With dead ends: 826 [2020-08-18 17:47:13,997 INFO L226 Difference]: Without dead ends: 823 [2020-08-18 17:47:13,998 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 17:47:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-08-18 17:47:14,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 700. [2020-08-18 17:47:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-18 17:47:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 799 transitions. [2020-08-18 17:47:14,149 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 799 transitions. Word has length 156 [2020-08-18 17:47:14,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:47:14,152 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 799 transitions. [2020-08-18 17:47:14,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 17:47:14,152 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 799 transitions. [2020-08-18 17:47:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-18 17:47:14,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:47:14,156 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 17:47:14,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:47:14,156 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:47:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:47:14,157 INFO L82 PathProgramCache]: Analyzing trace with hash 350169461, now seen corresponding path program 1 times [2020-08-18 17:47:14,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:47:14,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967661265] [2020-08-18 17:47:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:47:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,514 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:47:14,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:47:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:47:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:47:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:47:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:47:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:47:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:47:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:47:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:47:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:47:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 17:47:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 17:47:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:47:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:47:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 17:47:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-18 17:47:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:14,751 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 17:47:14,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967661265] [2020-08-18 17:47:14,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:47:14,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 17:47:14,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551471807] [2020-08-18 17:47:14,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:47:14,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:47:14,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:47:14,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:47:14,754 INFO L87 Difference]: Start difference. First operand 700 states and 799 transitions. Second operand 12 states. [2020-08-18 17:47:15,456 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:47:16,390 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:47:16,957 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:17,227 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:47:17,474 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:47:17,729 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:47:18,009 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:47:18,287 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190