/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:18:02,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:18:02,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:18:02,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:18:02,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:18:02,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:18:02,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:18:02,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:18:02,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:18:02,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:18:02,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:18:02,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:18:02,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:18:02,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:18:02,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:18:02,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:18:02,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:18:02,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:18:02,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:18:02,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:18:02,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:18:02,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:18:02,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:18:02,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:18:02,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:18:02,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:18:02,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:18:02,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:18:02,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:18:02,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:18:02,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:18:02,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:18:02,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:18:02,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:18:02,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:18:02,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:18:02,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:18:02,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:18:02,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:18:02,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:18:02,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:18:02,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:18:02,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:18:02,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:18:02,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:18:02,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:18:02,527 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:18:02,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:18:02,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:18:02,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:18:02,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:18:02,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:18:02,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:18:02,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:18:02,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:18:02,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:18:02,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:18:02,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:18:02,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:18:02,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:18:02,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:18:02,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:18:02,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:18:02,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:18:02,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:18:02,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:18:02,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:18:02,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:18:02,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:18:02,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:18:02,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:18:02,533 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:18:02,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:18:02,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:18:02,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:18:02,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:18:02,854 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:18:02,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-18 19:18:02,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c95850cb/44b05cd4c0ee462e936215fc5ed526d4/FLAG75194b903 [2020-08-18 19:18:03,478 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:18:03,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-18 19:18:03,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c95850cb/44b05cd4c0ee462e936215fc5ed526d4/FLAG75194b903 [2020-08-18 19:18:03,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c95850cb/44b05cd4c0ee462e936215fc5ed526d4 [2020-08-18 19:18:03,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:18:03,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:18:03,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:18:03,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:18:03,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:18:03,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:18:03" (1/1) ... [2020-08-18 19:18:03,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53352fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:03, skipping insertion in model container [2020-08-18 19:18:03,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:18:03" (1/1) ... [2020-08-18 19:18:03,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:18:03,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:18:04,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:18:04,329 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:18:04,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:18:04,445 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:18:04,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04 WrapperNode [2020-08-18 19:18:04,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:18:04,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:18:04,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:18:04,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:18:04,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (1/1) ... [2020-08-18 19:18:04,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (1/1) ... [2020-08-18 19:18:04,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (1/1) ... [2020-08-18 19:18:04,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (1/1) ... [2020-08-18 19:18:04,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (1/1) ... [2020-08-18 19:18:04,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (1/1) ... [2020-08-18 19:18:04,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (1/1) ... [2020-08-18 19:18:04,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:18:04,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:18:04,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:18:04,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:18:04,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (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 19:18:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:18:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:18:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:18:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 19:18:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 19:18:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:18:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:18:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:18:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:18:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:18:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:18:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:18:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:18:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:18:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 19:18:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:18:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:18:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:18:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:18:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:18:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:18:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:18:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:18:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:18:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:18:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:18:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 19:18:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 19:18:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:18:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:18:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:18:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:18:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:18:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:18:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:18:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:18:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:18:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:18:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:18:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:18:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:18:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:18:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:18:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:18:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:18:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:18:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:18:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:18:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:18:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:18:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:18:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:18:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:18:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 19:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:18:05,679 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:18:05,680 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:18:05,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:18:05 BoogieIcfgContainer [2020-08-18 19:18:05,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:18:05,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:18:05,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:18:05,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:18:05,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:18:03" (1/3) ... [2020-08-18 19:18:05,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1fdd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:18:05, skipping insertion in model container [2020-08-18 19:18:05,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:04" (2/3) ... [2020-08-18 19:18:05,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1fdd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:18:05, skipping insertion in model container [2020-08-18 19:18:05,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:18:05" (3/3) ... [2020-08-18 19:18:05,693 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-08-18 19:18:05,703 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:18:05,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:18:05,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:18:05,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:18:05,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:18:05,747 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:18:05,747 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:18:05,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:18:05,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:18:05,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:18:05,748 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:18:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-18 19:18:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 19:18:05,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:05,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:05,781 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:05,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1966863296, now seen corresponding path program 1 times [2020-08-18 19:18:05,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:05,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862592994] [2020-08-18 19:18:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,487 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:18:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:18:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:06,630 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 19:18:06,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862592994] [2020-08-18 19:18:06,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:06,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:18:06,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515516083] [2020-08-18 19:18:06,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:18:06,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:06,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:18:06,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:18:06,659 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-18 19:18:07,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:07,628 INFO L93 Difference]: Finished difference Result 274 states and 358 transitions. [2020-08-18 19:18:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:18:07,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 19:18:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:07,645 INFO L225 Difference]: With dead ends: 274 [2020-08-18 19:18:07,645 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 19:18:07,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:18:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 19:18:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 122. [2020-08-18 19:18:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 19:18:07,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2020-08-18 19:18:07,758 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 51 [2020-08-18 19:18:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:07,759 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2020-08-18 19:18:07,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:18:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2020-08-18 19:18:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 19:18:07,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:07,764 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 19:18:07,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:18:07,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:07,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash 335710898, now seen corresponding path program 1 times [2020-08-18 19:18:07,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:07,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707187391] [2020-08-18 19:18:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,116 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:18:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:18:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:08,185 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 19:18:08,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707187391] [2020-08-18 19:18:08,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:08,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:18:08,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777989167] [2020-08-18 19:18:08,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:18:08,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:08,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:18:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:18:08,189 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 5 states. [2020-08-18 19:18:08,674 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:09,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:09,454 INFO L93 Difference]: Finished difference Result 219 states and 269 transitions. [2020-08-18 19:18:09,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:18:09,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 19:18:09,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:09,458 INFO L225 Difference]: With dead ends: 219 [2020-08-18 19:18:09,458 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 19:18:09,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:18:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 19:18:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-18 19:18:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 19:18:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-08-18 19:18:09,497 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 52 [2020-08-18 19:18:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:09,497 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-08-18 19:18:09,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:18:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-08-18 19:18:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 19:18:09,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:09,500 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] [2020-08-18 19:18:09,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:18:09,500 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash 727255979, now seen corresponding path program 1 times [2020-08-18 19:18:09,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:09,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887858809] [2020-08-18 19:18:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,810 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:18:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:18:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:09,911 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 19:18:09,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887858809] [2020-08-18 19:18:09,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:09,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:18:09,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077536684] [2020-08-18 19:18:09,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:18:09,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:09,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:18:09,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:18:09,914 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 9 states. [2020-08-18 19:18:10,345 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:10,656 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:10,901 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:11,153 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:12,319 INFO L93 Difference]: Finished difference Result 228 states and 284 transitions. [2020-08-18 19:18:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:18:12,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 19:18:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:12,328 INFO L225 Difference]: With dead ends: 228 [2020-08-18 19:18:12,329 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 19:18:12,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:18:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 19:18:12,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-18 19:18:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 19:18:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-08-18 19:18:12,369 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 56 [2020-08-18 19:18:12,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:12,369 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-08-18 19:18:12,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:18:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-08-18 19:18:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 19:18:12,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:12,372 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] [2020-08-18 19:18:12,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:18:12,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:12,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:12,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1730792410, now seen corresponding path program 1 times [2020-08-18 19:18:12,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:12,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648536732] [2020-08-18 19:18:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,665 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:12,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:18:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 19:18:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 19:18:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:18:12,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648536732] [2020-08-18 19:18:12,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:12,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:18:12,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507589578] [2020-08-18 19:18:12,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:18:12,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:12,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:18:12,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:18:12,763 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 7 states. [2020-08-18 19:18:13,152 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:14,342 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:14,959 INFO L93 Difference]: Finished difference Result 313 states and 394 transitions. [2020-08-18 19:18:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:18:14,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-08-18 19:18:14,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:14,963 INFO L225 Difference]: With dead ends: 313 [2020-08-18 19:18:14,963 INFO L226 Difference]: Without dead ends: 228 [2020-08-18 19:18:14,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:18:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-08-18 19:18:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 182. [2020-08-18 19:18:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 19:18:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2020-08-18 19:18:15,010 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 64 [2020-08-18 19:18:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:15,010 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2020-08-18 19:18:15,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:18:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2020-08-18 19:18:15,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 19:18:15,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:15,013 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] [2020-08-18 19:18:15,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:18:15,013 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:15,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:15,014 INFO L82 PathProgramCache]: Analyzing trace with hash 529777432, now seen corresponding path program 1 times [2020-08-18 19:18:15,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:15,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295748721] [2020-08-18 19:18:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,299 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:18:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 19:18:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:18:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:15,406 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 19:18:15,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295748721] [2020-08-18 19:18:15,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:15,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:18:15,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167617909] [2020-08-18 19:18:15,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:18:15,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:15,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:18:15,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:18:15,408 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 9 states. [2020-08-18 19:18:15,974 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:16,961 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:17,299 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:17,845 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:18,098 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:18,999 INFO L93 Difference]: Finished difference Result 537 states and 684 transitions. [2020-08-18 19:18:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 19:18:19,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 19:18:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:19,011 INFO L225 Difference]: With dead ends: 537 [2020-08-18 19:18:19,011 INFO L226 Difference]: Without dead ends: 383 [2020-08-18 19:18:19,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 19:18:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-18 19:18:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 312. [2020-08-18 19:18:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-18 19:18:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2020-08-18 19:18:19,085 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 78 [2020-08-18 19:18:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:19,086 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2020-08-18 19:18:19,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:18:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2020-08-18 19:18:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 19:18:19,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:19,089 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] [2020-08-18 19:18:19,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:18:19,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash 281843316, now seen corresponding path program 1 times [2020-08-18 19:18:19,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:19,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523990411] [2020-08-18 19:18:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,356 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:18:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:18:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 19:18:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 19:18:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,485 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 19:18:19,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523990411] [2020-08-18 19:18:19,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:19,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:18:19,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278448847] [2020-08-18 19:18:19,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:18:19,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:19,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:18:19,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:18:19,489 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand 10 states. [2020-08-18 19:18:19,911 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:21,078 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:21,984 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:22,256 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:22,506 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:22,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:22,795 INFO L93 Difference]: Finished difference Result 702 states and 877 transitions. [2020-08-18 19:18:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 19:18:22,796 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-08-18 19:18:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:22,801 INFO L225 Difference]: With dead ends: 702 [2020-08-18 19:18:22,801 INFO L226 Difference]: Without dead ends: 418 [2020-08-18 19:18:22,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-18 19:18:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-18 19:18:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 311. [2020-08-18 19:18:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-18 19:18:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 359 transitions. [2020-08-18 19:18:22,898 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 359 transitions. Word has length 82 [2020-08-18 19:18:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:22,900 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 359 transitions. [2020-08-18 19:18:22,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:18:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 359 transitions. [2020-08-18 19:18:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 19:18:22,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:22,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:22,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:18:22,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:22,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:22,905 INFO L82 PathProgramCache]: Analyzing trace with hash 131138833, now seen corresponding path program 1 times [2020-08-18 19:18:22,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:22,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270092860] [2020-08-18 19:18:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,178 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:18:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:18:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 19:18:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:18:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:18:23,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270092860] [2020-08-18 19:18:23,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:23,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:18:23,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195274257] [2020-08-18 19:18:23,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:18:23,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:23,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:18:23,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:18:23,334 INFO L87 Difference]: Start difference. First operand 311 states and 359 transitions. Second operand 10 states. [2020-08-18 19:18:24,477 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:24,734 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:18:24,985 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:25,226 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:26,169 INFO L93 Difference]: Finished difference Result 709 states and 905 transitions. [2020-08-18 19:18:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:18:26,170 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-18 19:18:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:26,175 INFO L225 Difference]: With dead ends: 709 [2020-08-18 19:18:26,175 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 19:18:26,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:18:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 19:18:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 321. [2020-08-18 19:18:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 19:18:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 369 transitions. [2020-08-18 19:18:26,266 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 369 transitions. Word has length 98 [2020-08-18 19:18:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:26,267 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 369 transitions. [2020-08-18 19:18:26,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:18:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 369 transitions. [2020-08-18 19:18:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 19:18:26,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:26,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:26,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:18:26,270 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:26,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1918249009, now seen corresponding path program 1 times [2020-08-18 19:18:26,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:26,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241532312] [2020-08-18 19:18:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,565 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:18:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:18:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 19:18:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:18:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:18:26,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241532312] [2020-08-18 19:18:26,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:26,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:18:26,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727002557] [2020-08-18 19:18:26,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:18:26,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:26,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:18:26,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:18:26,736 INFO L87 Difference]: Start difference. First operand 321 states and 369 transitions. Second operand 12 states. [2020-08-18 19:18:27,225 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:27,479 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:27,713 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:28,326 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:28,573 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:28,806 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:29,888 INFO L93 Difference]: Finished difference Result 729 states and 927 transitions. [2020-08-18 19:18:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:18:29,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-08-18 19:18:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:29,895 INFO L225 Difference]: With dead ends: 729 [2020-08-18 19:18:29,895 INFO L226 Difference]: Without dead ends: 436 [2020-08-18 19:18:29,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 19:18:29,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-08-18 19:18:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 329. [2020-08-18 19:18:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-18 19:18:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2020-08-18 19:18:29,982 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 98 [2020-08-18 19:18:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:29,983 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2020-08-18 19:18:29,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:18:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2020-08-18 19:18:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 19:18:29,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:29,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:29,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:18:29,990 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:29,990 INFO L82 PathProgramCache]: Analyzing trace with hash -948667986, now seen corresponding path program 1 times [2020-08-18 19:18:29,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:29,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990082546] [2020-08-18 19:18:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,259 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:18:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:18:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 19:18:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:18:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:18:30,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990082546] [2020-08-18 19:18:30,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:30,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:18:30,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419851944] [2020-08-18 19:18:30,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:18:30,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:18:30,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:18:30,417 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand 8 states. [2020-08-18 19:18:30,879 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:31,441 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:33,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:33,494 INFO L93 Difference]: Finished difference Result 1028 states and 1346 transitions. [2020-08-18 19:18:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 19:18:33,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-18 19:18:33,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:33,500 INFO L225 Difference]: With dead ends: 1028 [2020-08-18 19:18:33,500 INFO L226 Difference]: Without dead ends: 727 [2020-08-18 19:18:33,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-08-18 19:18:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-08-18 19:18:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 595. [2020-08-18 19:18:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-08-18 19:18:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 705 transitions. [2020-08-18 19:18:33,627 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 705 transitions. Word has length 98 [2020-08-18 19:18:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:33,629 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 705 transitions. [2020-08-18 19:18:33,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:18:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 705 transitions. [2020-08-18 19:18:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 19:18:33,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:33,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:33,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:18:33,634 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash -944641720, now seen corresponding path program 1 times [2020-08-18 19:18:33,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:33,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203178003] [2020-08-18 19:18:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:33,964 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:33,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:33,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:18:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:18:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:18:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 19:18:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 19:18:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:18:34,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203178003] [2020-08-18 19:18:34,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:18:34,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 19:18:34,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596059894] [2020-08-18 19:18:34,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 19:18:34,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:34,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 19:18:34,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:18:34,302 INFO L87 Difference]: Start difference. First operand 595 states and 705 transitions. Second operand 18 states. [2020-08-18 19:18:35,007 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:35,337 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:35,602 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:35,863 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:36,482 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:37,255 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:37,585 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:37,863 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:38,130 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:38,476 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:38,764 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:39,360 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 19:18:39,885 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 19:18:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:41,502 INFO L93 Difference]: Finished difference Result 1262 states and 1575 transitions. [2020-08-18 19:18:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 19:18:41,503 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-08-18 19:18:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:41,508 INFO L225 Difference]: With dead ends: 1262 [2020-08-18 19:18:41,508 INFO L226 Difference]: Without dead ends: 695 [2020-08-18 19:18:41,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=428, Invalid=1734, Unknown=0, NotChecked=0, Total=2162 [2020-08-18 19:18:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-08-18 19:18:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 572. [2020-08-18 19:18:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-08-18 19:18:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 666 transitions. [2020-08-18 19:18:41,624 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 666 transitions. Word has length 102 [2020-08-18 19:18:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:41,624 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 666 transitions. [2020-08-18 19:18:41,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 19:18:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 666 transitions. [2020-08-18 19:18:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 19:18:41,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:41,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:41,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:18:41,628 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1654540536, now seen corresponding path program 1 times [2020-08-18 19:18:41,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:41,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353017261] [2020-08-18 19:18:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,895 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:18:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:18:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:18:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:18:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 19:18:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 19:18:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 19:18:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 19:18:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:18:42,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353017261] [2020-08-18 19:18:42,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:18:42,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 19:18:42,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550176337] [2020-08-18 19:18:42,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:18:42,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:42,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:18:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:18:42,099 INFO L87 Difference]: Start difference. First operand 572 states and 666 transitions. Second operand 9 states. [2020-08-18 19:18:42,597 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:44,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:44,673 INFO L93 Difference]: Finished difference Result 1091 states and 1387 transitions. [2020-08-18 19:18:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 19:18:44,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-18 19:18:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:44,683 INFO L225 Difference]: With dead ends: 1091 [2020-08-18 19:18:44,683 INFO L226 Difference]: Without dead ends: 1088 [2020-08-18 19:18:44,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-08-18 19:18:44,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-08-18 19:18:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 901. [2020-08-18 19:18:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-08-18 19:18:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1053 transitions. [2020-08-18 19:18:44,844 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1053 transitions. Word has length 137 [2020-08-18 19:18:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:44,845 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1053 transitions. [2020-08-18 19:18:44,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:18:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1053 transitions. [2020-08-18 19:18:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-18 19:18:44,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:44,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:44,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:18:44,851 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:44,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:44,851 INFO L82 PathProgramCache]: Analyzing trace with hash -402984640, now seen corresponding path program 1 times [2020-08-18 19:18:44,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:44,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031107653] [2020-08-18 19:18:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:18:44,922 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:18:44,923 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:18:44,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 19:18:44,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:18:44 BoogieIcfgContainer [2020-08-18 19:18:44,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:18:44,966 INFO L168 Benchmark]: Toolchain (without parser) took 41168.79 ms. Allocated memory was 146.8 MB in the beginning and 649.6 MB in the end (delta: 502.8 MB). Free memory was 102.0 MB in the beginning and 434.4 MB in the end (delta: -332.3 MB). Peak memory consumption was 170.5 MB. Max. memory is 7.1 GB. [2020-08-18 19:18:44,967 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 19:18:44,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.32 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.8 MB in the beginning and 173.0 MB in the end (delta: -71.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-18 19:18:44,968 INFO L168 Benchmark]: Boogie Preprocessor took 89.44 ms. Allocated memory is still 202.9 MB. Free memory was 172.4 MB in the beginning and 168.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:18:44,969 INFO L168 Benchmark]: RCFGBuilder took 1147.65 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 197.7 MB in the end (delta: -29.5 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-08-18 19:18:44,969 INFO L168 Benchmark]: TraceAbstraction took 39278.08 ms. Allocated memory was 235.9 MB in the beginning and 649.6 MB in the end (delta: 413.7 MB). Free memory was 197.7 MB in the beginning and 434.4 MB in the end (delta: -236.6 MB). Peak memory consumption was 177.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:18:44,972 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.32 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.8 MB in the beginning and 173.0 MB in the end (delta: -71.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.44 ms. Allocated memory is still 202.9 MB. Free memory was 172.4 MB in the beginning and 168.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1147.65 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 197.7 MB in the end (delta: -29.5 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39278.08 ms. Allocated memory was 235.9 MB in the beginning and 649.6 MB in the end (delta: 413.7 MB). Free memory was 197.7 MB in the beginning and 434.4 MB in the end (delta: -236.6 MB). Peak memory consumption was 177.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 830]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L43] int methAndRunningLastTime ; [L251] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L455] int pumpRunning = 0; [L456] int systemActive = 1; [L628] int waterLevel = 1; [L629] int methaneLevelCritical = 0; [L835] int cleanupTimeShifts = 4; [L909] int retValue_acc ; [L910] int tmp ; [L914] FCALL select_helpers() [L915] FCALL select_features() [L916] CALL, EXPR valid_product() [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); [L916] RET, EXPR valid_product() [L916] tmp = valid_product() [L918] COND TRUE \read(tmp) [L920] FCALL setup() [L921] CALL runTest() [L902] CALL __utac_acc__Specification2_spec__1() [L48] methAndRunningLastTime = 0 [L902] RET __utac_acc__Specification2_spec__1() [L903] CALL test() [L724] int splverifierCounter ; [L725] int tmp ; [L726] int tmp___0 ; [L727] int tmp___1 ; [L728] int tmp___2 ; [L731] splverifierCounter = 0 [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND TRUE \read(tmp) [L745] CALL waterRise() [L646] COND TRUE waterLevel < 2 [L647] waterLevel = waterLevel + 1 [L745] RET waterRise() [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND FALSE !(\read(pumpRunning)) [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND TRUE ! pumpRunning [L496] CALL, EXPR isHighWaterLevel() [L606] int retValue_acc ; [L607] int tmp ; [L608] int tmp___0 ; [L612] CALL, EXPR isHighWaterSensorDry() [L708] int retValue_acc ; [L711] COND FALSE !(waterLevel < 2) [L715] retValue_acc = 0 [L716] return (retValue_acc); [L612] RET, EXPR isHighWaterSensorDry() [L612] tmp = isHighWaterSensorDry() [L614] COND FALSE !(\read(tmp)) [L617] tmp___0 = 1 [L619] retValue_acc = tmp___0 [L620] return (retValue_acc); [L496] RET, EXPR isHighWaterLevel() [L496] tmp = isHighWaterLevel() [L498] COND TRUE \read(tmp) [L500] CALL activatePump() [L525] int tmp ; [L529] CALL, EXPR isMethaneAlarm() [L550] int retValue_acc ; [L554] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L554] RET, EXPR isMethaneLevelCritical() [L554] retValue_acc = isMethaneLevelCritical() [L556] return (retValue_acc); [L529] RET, EXPR isMethaneAlarm() [L529] tmp = isMethaneAlarm() [L531] COND FALSE !(\read(tmp)) [L535] CALL activatePump__wrappee__highWaterSensor() [L519] pumpRunning = 1 [L535] RET activatePump__wrappee__highWaterSensor() [L500] RET activatePump() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND FALSE !(\read(tmp)) [L76] methAndRunningLastTime = 0 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp___0) [L755] CALL changeMethaneLevel() [L658] COND FALSE !(\read(methaneLevelCritical)) [L661] methaneLevelCritical = 1 [L755] RET changeMethaneLevel() [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND FALSE !(\read(methAndRunningLastTime)) [L70] methAndRunningLastTime = 1 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND TRUE \read(methAndRunningLastTime) [L67] CALL __automaton_fail() [L830] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.1s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 32.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1267 SDtfs, 3482 SDslu, 1738 SDs, 0 SdLazy, 7434 SolverSat, 2229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 969 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1095 NumberOfCodeBlocks, 1095 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 905 ConstructedInterpolants, 0 QuantifiedInterpolants, 303920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 38/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...