/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:28:23,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:28:23,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:28:23,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:28:23,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:28:23,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:28:23,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:28:23,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:28:23,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:28:23,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:28:23,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:28:23,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:28:23,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:28:23,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:28:23,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:28:23,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:28:23,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:28:23,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:28:23,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:28:23,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:28:23,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:28:23,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:28:23,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:28:23,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:28:23,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:28:23,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:28:23,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:28:23,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:28:23,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:28:23,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:28:23,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:28:23,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:28:23,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:28:23,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:28:23,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:28:23,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:28:23,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:28:23,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:28:23,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:28:23,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:28:23,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:28:23,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 00:28:23,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:28:23,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:28:23,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:28:23,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:28:23,488 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:28:23,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:28:23,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:28:23,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:28:23,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:28:23,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:28:23,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:28:23,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:28:23,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:28:23,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:28:23,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:28:23,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:28:23,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:28:23,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:28:23,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:28:23,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:28:23,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:28:23,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:28:23,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:28:23,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:28:23,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:28:23,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:28:23,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:28:23,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:28:23,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:28:23,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:28:23,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:28:23,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:28:23,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:28:23,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:28:23,842 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:28:23,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-22 00:28:23,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c774eee1f/6e37b25ed0744ddf862ce5f43780bac6/FLAG35d9ffeb7 [2020-08-22 00:28:24,493 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:28:24,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-22 00:28:24,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c774eee1f/6e37b25ed0744ddf862ce5f43780bac6/FLAG35d9ffeb7 [2020-08-22 00:28:24,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c774eee1f/6e37b25ed0744ddf862ce5f43780bac6 [2020-08-22 00:28:24,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:28:24,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:28:24,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:24,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:28:24,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:28:24,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:24" (1/1) ... [2020-08-22 00:28:24,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:24, skipping insertion in model container [2020-08-22 00:28:24,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:24" (1/1) ... [2020-08-22 00:28:24,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:28:24,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:28:25,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:25,298 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:28:25,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:25,409 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:28:25,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25 WrapperNode [2020-08-22 00:28:25,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:25,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:28:25,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:28:25,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:28:25,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (1/1) ... [2020-08-22 00:28:25,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (1/1) ... [2020-08-22 00:28:25,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (1/1) ... [2020-08-22 00:28:25,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (1/1) ... [2020-08-22 00:28:25,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (1/1) ... [2020-08-22 00:28:25,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (1/1) ... [2020-08-22 00:28:25,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (1/1) ... [2020-08-22 00:28:25,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:28:25,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:28:25,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:28:25,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:28:25,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:28:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:28:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:28:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:28:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:28:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:28:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:28:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:28:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:28:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:28:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:28:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:28:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:28:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:28:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:28:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:28:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:28:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:28:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:28:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 00:28:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:28:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:28:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:28:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:28:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:28:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:28:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:28:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 00:28:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:28:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:28:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:28:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:28:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:28:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:28:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:28:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:28:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:28:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:28:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:28:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:28:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:28:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:28:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:28:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:28:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:28:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:28:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:28:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:28:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:28:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:28:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:28:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:28:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:28:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:28:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:28:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:28:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:28:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:28:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:28:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:28:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:28:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:28:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:28:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:28:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:28:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:28:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:28:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:28:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:28:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:28:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:28:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 00:28:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:28:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:28:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:28:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:28:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:28:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:28:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:28:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:28:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:28:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:28:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:28:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:28:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:28:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:28:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 00:28:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:28:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:28:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:28:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:28:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:28:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:28:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:28:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:28:26,625 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:28:26,625 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:28:26,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:28:26 BoogieIcfgContainer [2020-08-22 00:28:26,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:28:26,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:28:26,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:28:26,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:28:26,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:28:24" (1/3) ... [2020-08-22 00:28:26,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73176583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:28:26, skipping insertion in model container [2020-08-22 00:28:26,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:25" (2/3) ... [2020-08-22 00:28:26,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73176583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:28:26, skipping insertion in model container [2020-08-22 00:28:26,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:28:26" (3/3) ... [2020-08-22 00:28:26,639 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-22 00:28:26,650 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:28:26,659 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:28:26,673 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:28:26,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:28:26,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:28:26,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:28:26,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:28:26,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:28:26,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:28:26,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:28:26,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:28:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-22 00:28:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 00:28:26,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:26,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:26,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:26,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-22 00:28:26,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:26,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643542756] [2020-08-22 00:28:26,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:27,486 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:27,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:27,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:27,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:28:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:27,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:28:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:27,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643542756] [2020-08-22 00:28:27,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:27,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:28:27,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658116828] [2020-08-22 00:28:27,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:28:27,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:27,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:28:27,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:28:27,661 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-22 00:28:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:28,812 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-22 00:28:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:28:28,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 00:28:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:28,829 INFO L225 Difference]: With dead ends: 310 [2020-08-22 00:28:28,830 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 00:28:28,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:28:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 00:28:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-22 00:28:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 00:28:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-22 00:28:28,929 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-22 00:28:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:28,930 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-22 00:28:28,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:28:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-22 00:28:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 00:28:28,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:28,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:28,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:28:28,935 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:28,935 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-22 00:28:28,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:28,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851620290] [2020-08-22 00:28:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,259 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:28:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:29,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851620290] [2020-08-22 00:28:29,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:29,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:28:29,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510008657] [2020-08-22 00:28:29,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:28:29,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:29,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:28:29,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:28:29,306 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-22 00:28:29,671 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:30,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:30,438 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-22 00:28:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:28:30,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 00:28:30,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:30,444 INFO L225 Difference]: With dead ends: 230 [2020-08-22 00:28:30,445 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 00:28:30,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:28:30,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 00:28:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-22 00:28:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 00:28:30,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-22 00:28:30,487 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-22 00:28:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:30,488 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-22 00:28:30,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:28:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-22 00:28:30,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:28:30,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:30,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:30,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:28:30,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:30,491 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-22 00:28:30,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:30,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31977029] [2020-08-22 00:28:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:30,831 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:30,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:30,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:30,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:28:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:28:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:30,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31977029] [2020-08-22 00:28:30,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:30,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:28:30,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752339186] [2020-08-22 00:28:30,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:28:30,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:30,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:28:30,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:28:30,974 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-22 00:28:31,340 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:31,638 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:31,899 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:32,121 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:32,838 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:34,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:34,477 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-22 00:28:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:28:34,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 00:28:34,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:34,483 INFO L225 Difference]: With dead ends: 427 [2020-08-22 00:28:34,483 INFO L226 Difference]: Without dead ends: 327 [2020-08-22 00:28:34,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:28:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-22 00:28:34,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-22 00:28:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-22 00:28:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-22 00:28:34,554 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-22 00:28:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:34,554 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-22 00:28:34,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:28:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-22 00:28:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:28:34,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:34,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:34,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:28:34,558 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-22 00:28:34,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:34,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048183646] [2020-08-22 00:28:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:34,911 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:34,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:34,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:28:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:28:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:35,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048183646] [2020-08-22 00:28:35,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:35,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:28:35,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464615220] [2020-08-22 00:28:35,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:28:35,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:35,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:28:35,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:28:35,027 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-22 00:28:35,422 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:35,744 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:36,003 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:36,247 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:36,816 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:37,546 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:37,896 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:38,149 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:38,441 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:38,684 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:39,081 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:39,325 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:39,549 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:41,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:41,113 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-22 00:28:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 00:28:41,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 00:28:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:41,124 INFO L225 Difference]: With dead ends: 1013 [2020-08-22 00:28:41,124 INFO L226 Difference]: Without dead ends: 787 [2020-08-22 00:28:41,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 00:28:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-22 00:28:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-22 00:28:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-22 00:28:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-22 00:28:41,288 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-22 00:28:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:41,289 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-22 00:28:41,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:28:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-22 00:28:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 00:28:41,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:41,293 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] [2020-08-22 00:28:41,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:28:41,294 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:41,294 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-22 00:28:41,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:41,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813100671] [2020-08-22 00:28:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,533 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:41,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:28:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:28:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 00:28:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:41,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813100671] [2020-08-22 00:28:41,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:41,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:28:41,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375734051] [2020-08-22 00:28:41,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:28:41,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:41,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:28:41,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:28:41,608 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-22 00:28:41,901 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:43,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:43,647 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-22 00:28:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:28:43,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 00:28:43,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:43,656 INFO L225 Difference]: With dead ends: 1681 [2020-08-22 00:28:43,656 INFO L226 Difference]: Without dead ends: 1015 [2020-08-22 00:28:43,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:28:43,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-22 00:28:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-22 00:28:43,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-22 00:28:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-22 00:28:43,844 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-22 00:28:43,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:43,844 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-22 00:28:43,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:28:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-22 00:28:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 00:28:43,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:43,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:43,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:28:43,848 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:43,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:43,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-22 00:28:43,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:43,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350622686] [2020-08-22 00:28:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,120 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:44,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:28:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:28:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:28:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 00:28:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 00:28:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 00:28:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:28:44,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350622686] [2020-08-22 00:28:44,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:44,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:28:44,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532059377] [2020-08-22 00:28:44,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:28:44,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:44,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:28:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:28:44,288 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-22 00:28:44,968 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 00:28:45,583 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:47,608 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:49,036 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-22 00:28:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:28:49,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 00:28:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:49,044 INFO L225 Difference]: With dead ends: 1803 [2020-08-22 00:28:49,045 INFO L226 Difference]: Without dead ends: 1150 [2020-08-22 00:28:49,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 00:28:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-22 00:28:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-22 00:28:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-22 00:28:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-22 00:28:49,351 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-22 00:28:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:49,354 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-22 00:28:49,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:28:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-22 00:28:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 00:28:49,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:49,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:49,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:28:49,362 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:49,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2033395005, now seen corresponding path program 1 times [2020-08-22 00:28:49,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:49,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660678135] [2020-08-22 00:28:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,623 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:28:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:28:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 00:28:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 00:28:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 00:28:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 00:28:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 00:28:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 00:28:49,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660678135] [2020-08-22 00:28:49,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:49,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:28:49,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084285360] [2020-08-22 00:28:49,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:28:49,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:49,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:28:49,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:28:49,875 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-22 00:28:51,108 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:51,390 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:28:51,681 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:51,920 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:53,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:53,022 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-22 00:28:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:28:53,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-22 00:28:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:53,032 INFO L225 Difference]: With dead ends: 2230 [2020-08-22 00:28:53,032 INFO L226 Difference]: Without dead ends: 1199 [2020-08-22 00:28:53,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:28:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-22 00:28:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-22 00:28:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-22 00:28:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-22 00:28:53,365 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 130 [2020-08-22 00:28:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:53,366 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-22 00:28:53,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:28:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-22 00:28:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-22 00:28:53,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:53,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:53,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:28:53,371 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:53,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1477382459, now seen corresponding path program 1 times [2020-08-22 00:28:53,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:53,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852943986] [2020-08-22 00:28:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,670 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:28:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:28:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 00:28:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 00:28:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 00:28:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 00:28:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 00:28:53,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852943986] [2020-08-22 00:28:53,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:53,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:28:53,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578249610] [2020-08-22 00:28:53,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:28:53,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:53,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:28:53,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:28:53,882 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-22 00:28:54,513 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:54,759 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:54,995 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:55,721 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:55,985 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:56,234 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:57,299 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-22 00:28:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:28:57,300 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-22 00:28:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:57,306 INFO L225 Difference]: With dead ends: 1969 [2020-08-22 00:28:57,306 INFO L226 Difference]: Without dead ends: 908 [2020-08-22 00:28:57,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:28:57,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-22 00:28:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-22 00:28:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-22 00:28:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-22 00:28:57,493 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 126 [2020-08-22 00:28:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:57,493 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-22 00:28:57,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:28:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-22 00:28:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 00:28:57,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:57,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:57,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:28:57,499 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:57,499 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-22 00:28:57,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:57,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175735760] [2020-08-22 00:28:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,864 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:28:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:28:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:28:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:28:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:58,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 00:28:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:58,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 00:28:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 00:28:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 00:28:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:28:58,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175735760] [2020-08-22 00:28:58,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:58,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:28:58,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218495350] [2020-08-22 00:28:58,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:28:58,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:58,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:28:58,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:28:58,071 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-22 00:28:58,522 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:59,377 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:59,668 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:59,907 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:00,133 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:00,376 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:00,736 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:01,302 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:01,569 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:01,861 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:03,651 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-22 00:29:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:29:03,652 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-22 00:29:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:03,660 INFO L225 Difference]: With dead ends: 2072 [2020-08-22 00:29:03,660 INFO L226 Difference]: Without dead ends: 1389 [2020-08-22 00:29:03,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-22 00:29:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-22 00:29:03,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-22 00:29:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-22 00:29:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-22 00:29:03,912 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-22 00:29:03,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:03,913 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-22 00:29:03,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:29:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-22 00:29:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 00:29:03,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:03,919 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:03,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:29:03,920 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:03,920 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-22 00:29:03,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:03,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899215299] [2020-08-22 00:29:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,271 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:04,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:29:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 00:29:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:29:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 00:29:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 00:29:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 00:29:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 00:29:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 00:29:04,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899215299] [2020-08-22 00:29:04,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:04,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:29:04,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067033229] [2020-08-22 00:29:04,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:29:04,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:04,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:29:04,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:29:04,594 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-22 00:29:05,626 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:05,862 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:06,088 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:06,561 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:07,720 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:08,778 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-22 00:29:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 00:29:08,779 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-22 00:29:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:08,786 INFO L225 Difference]: With dead ends: 2226 [2020-08-22 00:29:08,786 INFO L226 Difference]: Without dead ends: 1233 [2020-08-22 00:29:08,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-22 00:29:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-22 00:29:08,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-22 00:29:08,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-22 00:29:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-22 00:29:09,001 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-22 00:29:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:09,002 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-22 00:29:09,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:29:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-22 00:29:09,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 00:29:09,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:09,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 00:29:09,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:29:09,008 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:09,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-22 00:29:09,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:09,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174424213] [2020-08-22 00:29:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:29:09,103 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:29:09,104 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:29:09,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:29:09,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:29:09 BoogieIcfgContainer [2020-08-22 00:29:09,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:29:09,163 INFO L168 Benchmark]: Toolchain (without parser) took 44387.88 ms. Allocated memory was 140.5 MB in the beginning and 764.9 MB in the end (delta: 624.4 MB). Free memory was 101.1 MB in the beginning and 414.0 MB in the end (delta: -312.9 MB). Peak memory consumption was 311.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:29:09,164 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:29:09,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.82 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 172.7 MB in the end (delta: -71.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:29:09,166 INFO L168 Benchmark]: Boogie Preprocessor took 110.01 ms. Allocated memory is still 204.5 MB. Free memory was 172.7 MB in the beginning and 167.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:29:09,167 INFO L168 Benchmark]: RCFGBuilder took 1109.73 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 167.3 MB in the beginning and 195.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:29:09,168 INFO L168 Benchmark]: TraceAbstraction took 42524.37 ms. Allocated memory was 237.0 MB in the beginning and 764.9 MB in the end (delta: 528.0 MB). Free memory was 195.2 MB in the beginning and 414.0 MB in the end (delta: -218.8 MB). Peak memory consumption was 309.1 MB. Max. memory is 7.1 GB. [2020-08-22 00:29:09,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 638.82 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 172.7 MB in the end (delta: -71.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.01 ms. Allocated memory is still 204.5 MB. Free memory was 172.7 MB in the beginning and 167.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1109.73 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 167.3 MB in the beginning and 195.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42524.37 ms. Allocated memory was 237.0 MB in the beginning and 764.9 MB in the end (delta: 528.0 MB). Free memory was 195.2 MB in the beginning and 414.0 MB in the end (delta: -218.8 MB). Peak memory consumption was 309.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 35.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1357 SDtfs, 3146 SDslu, 1751 SDs, 0 SdLazy, 8583 SolverSat, 2308 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 329447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 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...