/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:05:56,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:05:56,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:05:56,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:05:56,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:05:56,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:05:56,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:05:56,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:05:56,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:05:56,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:05:56,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:05:56,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:05:56,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:05:56,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:05:56,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:05:56,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:05:56,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:05:56,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:05:56,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:05:56,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:05:56,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:05:56,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:05:56,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:05:56,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:05:56,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:05:56,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:05:56,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:05:56,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:05:56,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:05:56,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:05:56,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:05:56,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:05:56,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:05:56,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:05:56,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:05:56,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:05:56,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:05:56,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:05:56,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:05:56,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:05:56,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:05:56,552 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 [2020-08-19 00:05:56,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:05:56,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:05:56,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:05:56,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:05:56,591 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:05:56,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:05:56,592 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:05:56,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:05:56,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:05:56,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:05:56,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:05:56,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:05:56,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:05:56,594 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:05:56,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:05:56,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:05:56,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:05:56,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:05:56,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:05:56,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:05:56,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:05:56,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:05:56,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:05:56,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:05:56,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:05:56,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:05:56,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:05:56,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:05:56,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:05:56,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:05:56,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:05:56,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:05:56,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:05:56,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:05:56,908 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:05:56,908 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-19 00:05:56,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6b4f0c23/99611651668a410e866fe00f8736b1c0/FLAG9139160e5 [2020-08-19 00:05:57,451 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:05:57,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-19 00:05:57,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6b4f0c23/99611651668a410e866fe00f8736b1c0/FLAG9139160e5 [2020-08-19 00:05:57,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6b4f0c23/99611651668a410e866fe00f8736b1c0 [2020-08-19 00:05:57,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:05:57,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:05:57,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:05:57,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:05:57,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:05:57,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:05:57" (1/1) ... [2020-08-19 00:05:57,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dac89bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:57, skipping insertion in model container [2020-08-19 00:05:57,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:05:57" (1/1) ... [2020-08-19 00:05:57,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:05:57,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:05:58,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:05:58,345 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:05:58,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:05:58,439 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:05:58,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58 WrapperNode [2020-08-19 00:05:58,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:05:58,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:05:58,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:05:58,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:05:58,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (1/1) ... [2020-08-19 00:05:58,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (1/1) ... [2020-08-19 00:05:58,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (1/1) ... [2020-08-19 00:05:58,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (1/1) ... [2020-08-19 00:05:58,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (1/1) ... [2020-08-19 00:05:58,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (1/1) ... [2020-08-19 00:05:58,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (1/1) ... [2020-08-19 00:05:58,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:05:58,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:05:58,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:05:58,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:05:58,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (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 [2020-08-19 00:05:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:05:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:05:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:05:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:05:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:05:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:05:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:05:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:05:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:05:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:05:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:05:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:05:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:05:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:05:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:05:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:05:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:05:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:05:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:05:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:05:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:05:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:05:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:05:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:05:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:05:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:05:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:05:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:05:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:05:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:05:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:05:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:05:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:05:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:05:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:05:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:05:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:05:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:05:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:05:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:05:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:05:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:05:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:05:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:05:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:05:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:05:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:05:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:05:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:05:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:05:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:05:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:05:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:05:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:05:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:05:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:05:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:05:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:05:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:05:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:05:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:05:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:05:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:05:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:05:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:05:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:05:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:05:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:05:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:05:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:05:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:05:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:05:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:05:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:05:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:05:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:05:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:05:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:05:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:05:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:05:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:05:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:05:59,585 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:05:59,585 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:05:59,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:05:59 BoogieIcfgContainer [2020-08-19 00:05:59,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:05:59,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:05:59,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:05:59,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:05:59,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:05:57" (1/3) ... [2020-08-19 00:05:59,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afd853e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:05:59, skipping insertion in model container [2020-08-19 00:05:59,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:05:58" (2/3) ... [2020-08-19 00:05:59,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afd853e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:05:59, skipping insertion in model container [2020-08-19 00:05:59,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:05:59" (3/3) ... [2020-08-19 00:05:59,599 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-19 00:05:59,610 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:05:59,617 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:05:59,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:05:59,656 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:05:59,656 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:05:59,657 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:05:59,657 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:05:59,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:05:59,657 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:05:59,658 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:05:59,658 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:05:59,679 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-19 00:05:59,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 00:05:59,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:05:59,689 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] [2020-08-19 00:05:59,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:05:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:05:59,695 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-19 00:05:59,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:05:59,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885239166] [2020-08-19 00:05:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:05:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:00,280 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:00,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:00,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:00,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:06:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:00,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:06:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:00,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885239166] [2020-08-19 00:06:00,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:00,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:06:00,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133057550] [2020-08-19 00:06:00,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:06:00,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:00,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:06:00,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:06:00,446 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-19 00:06:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:01,412 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-19 00:06:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:06:01,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 00:06:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:01,430 INFO L225 Difference]: With dead ends: 258 [2020-08-19 00:06:01,430 INFO L226 Difference]: Without dead ends: 140 [2020-08-19 00:06:01,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:06:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-19 00:06:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-19 00:06:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-19 00:06:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-19 00:06:01,526 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-19 00:06:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:01,527 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-19 00:06:01,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:06:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-19 00:06:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 00:06:01,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:01,531 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] [2020-08-19 00:06:01,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:06:01,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:01,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:01,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-19 00:06:01,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:01,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144019683] [2020-08-19 00:06:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:01,898 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:01,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:01,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:01,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:06:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:06:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:01,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144019683] [2020-08-19 00:06:01,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:01,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:06:01,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599175307] [2020-08-19 00:06:01,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:06:01,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:01,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:06:01,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:06:01,977 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-19 00:06:02,430 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:03,016 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-19 00:06:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:06:03,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 00:06:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:03,021 INFO L225 Difference]: With dead ends: 187 [2020-08-19 00:06:03,021 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 00:06:03,022 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 [2020-08-19 00:06:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 00:06:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-19 00:06:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 00:06:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-19 00:06:03,056 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-19 00:06:03,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:03,056 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-19 00:06:03,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:06:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-19 00:06:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:06:03,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:03,059 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] [2020-08-19 00:06:03,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:06:03,059 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-19 00:06:03,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:03,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093144148] [2020-08-19 00:06:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:03,392 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:03,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:06:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:03,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:06:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:03,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093144148] [2020-08-19 00:06:03,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:03,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:06:03,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345750248] [2020-08-19 00:06:03,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:06:03,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:03,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:06:03,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:06:03,482 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-19 00:06:03,844 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:04,143 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:04,412 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:04,649 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:05,536 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-19 00:06:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:06:05,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 00:06:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:05,540 INFO L225 Difference]: With dead ends: 200 [2020-08-19 00:06:05,540 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 00:06:05,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:06:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 00:06:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-19 00:06:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 00:06:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-19 00:06:05,571 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-19 00:06:05,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:05,571 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-19 00:06:05,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:06:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-19 00:06:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 00:06:05,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:05,573 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] [2020-08-19 00:06:05,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:06:05,574 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:05,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-19 00:06:05,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:05,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445931677] [2020-08-19 00:06:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,852 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:06:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 00:06:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 00:06:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:05,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445931677] [2020-08-19 00:06:05,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:05,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:06:05,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362890781] [2020-08-19 00:06:05,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:06:05,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:05,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:06:05,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:06:05,953 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-19 00:06:06,268 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:07,329 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:07,757 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-19 00:06:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:06:07,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-19 00:06:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:07,762 INFO L225 Difference]: With dead ends: 288 [2020-08-19 00:06:07,762 INFO L226 Difference]: Without dead ends: 212 [2020-08-19 00:06:07,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:06:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-19 00:06:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-19 00:06:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-19 00:06:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-19 00:06:07,803 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-19 00:06:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:07,803 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-19 00:06:07,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:06:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-19 00:06:07,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 00:06:07,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:07,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:07,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:06:07,806 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:07,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:07,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-19 00:06:07,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:07,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132226116] [2020-08-19 00:06:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,076 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:08,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:06:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 00:06:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 00:06:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:08,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132226116] [2020-08-19 00:06:08,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:08,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:06:08,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550893079] [2020-08-19 00:06:08,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:06:08,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:08,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:06:08,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:06:08,198 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-19 00:06:08,516 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:09,503 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:09,754 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:09,986 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:10,206 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:10,480 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:11,114 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-19 00:06:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:06:11,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-19 00:06:11,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:11,119 INFO L225 Difference]: With dead ends: 505 [2020-08-19 00:06:11,119 INFO L226 Difference]: Without dead ends: 360 [2020-08-19 00:06:11,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:06:11,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-19 00:06:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-19 00:06:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-19 00:06:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-19 00:06:11,186 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-19 00:06:11,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:11,187 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-19 00:06:11,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:06:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-19 00:06:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 00:06:11,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:11,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:11,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:06:11,189 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:11,190 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-19 00:06:11,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:11,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195607605] [2020-08-19 00:06:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,490 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:06:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:06:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:06:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:11,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195607605] [2020-08-19 00:06:11,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:11,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:06:11,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302864919] [2020-08-19 00:06:11,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:06:11,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:11,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:06:11,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:06:11,616 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-19 00:06:11,982 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:12,979 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:13,190 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:13,437 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:13,700 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:13,930 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:14,508 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-19 00:06:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:06:14,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-19 00:06:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:14,513 INFO L225 Difference]: With dead ends: 402 [2020-08-19 00:06:14,514 INFO L226 Difference]: Without dead ends: 399 [2020-08-19 00:06:14,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:06:14,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-19 00:06:14,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-19 00:06:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-19 00:06:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-19 00:06:14,591 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-19 00:06:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:14,591 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-19 00:06:14,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:06:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-19 00:06:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 00:06:14,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:14,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:14,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:06:14,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-19 00:06:14,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:14,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779547913] [2020-08-19 00:06:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,888 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:06:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 00:06:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 00:06:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:15,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779547913] [2020-08-19 00:06:15,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:15,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:06:15,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953100492] [2020-08-19 00:06:15,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:06:15,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:15,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:06:15,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:06:15,029 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-19 00:06:15,899 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:16,147 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:06:16,374 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:16,601 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:17,458 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-19 00:06:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:06:17,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-19 00:06:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:17,462 INFO L225 Difference]: With dead ends: 672 [2020-08-19 00:06:17,463 INFO L226 Difference]: Without dead ends: 403 [2020-08-19 00:06:17,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:06:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-19 00:06:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-19 00:06:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-19 00:06:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-19 00:06:17,521 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-19 00:06:17,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:17,521 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-19 00:06:17,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:06:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-19 00:06:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 00:06:17,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:17,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:17,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:06:17,523 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:17,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-19 00:06:17,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:17,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244221112] [2020-08-19 00:06:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,798 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:06:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 00:06:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 00:06:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:17,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244221112] [2020-08-19 00:06:17,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:17,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:06:17,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480200542] [2020-08-19 00:06:17,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:06:17,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:17,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:06:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:06:17,923 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-19 00:06:18,608 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:18,916 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:19,124 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:19,705 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:19,937 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:20,162 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:21,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:21,028 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-19 00:06:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:06:21,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-19 00:06:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:21,033 INFO L225 Difference]: With dead ends: 696 [2020-08-19 00:06:21,033 INFO L226 Difference]: Without dead ends: 417 [2020-08-19 00:06:21,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:06:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-19 00:06:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-19 00:06:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-19 00:06:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-19 00:06:21,107 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-19 00:06:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:21,108 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-19 00:06:21,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:06:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-19 00:06:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 00:06:21,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:21,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:21,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:06:21,110 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:21,110 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-19 00:06:21,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:21,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083782636] [2020-08-19 00:06:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,356 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:06:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 00:06:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 00:06:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:21,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083782636] [2020-08-19 00:06:21,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:21,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:06:21,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964493691] [2020-08-19 00:06:21,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:06:21,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:06:21,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:06:21,466 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-19 00:06:21,929 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:22,412 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:24,167 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-19 00:06:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:06:24,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-19 00:06:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:24,176 INFO L225 Difference]: With dead ends: 1018 [2020-08-19 00:06:24,176 INFO L226 Difference]: Without dead ends: 731 [2020-08-19 00:06:24,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:06:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-19 00:06:24,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-19 00:06:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-19 00:06:24,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-19 00:06:24,354 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-19 00:06:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:24,356 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-19 00:06:24,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:06:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-19 00:06:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 00:06:24,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:24,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:24,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:06:24,360 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:24,360 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-19 00:06:24,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:24,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993923003] [2020-08-19 00:06:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:06:24,436 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:06:24,436 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:06:24,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:06:24,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:06:24 BoogieIcfgContainer [2020-08-19 00:06:24,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:06:24,465 INFO L168 Benchmark]: Toolchain (without parser) took 26667.89 ms. Allocated memory was 149.4 MB in the beginning and 591.4 MB in the end (delta: 442.0 MB). Free memory was 104.9 MB in the beginning and 483.8 MB in the end (delta: -378.9 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:24,466 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:06:24,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.46 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 104.7 MB in the beginning and 173.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:24,468 INFO L168 Benchmark]: Boogie Preprocessor took 97.66 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 169.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:24,469 INFO L168 Benchmark]: RCFGBuilder took 1052.53 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 169.4 MB in the beginning and 193.1 MB in the end (delta: -23.6 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:24,471 INFO L168 Benchmark]: TraceAbstraction took 24871.70 ms. Allocated memory was 234.4 MB in the beginning and 591.4 MB in the end (delta: 357.0 MB). Free memory was 191.7 MB in the beginning and 483.8 MB in the end (delta: -292.1 MB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:24,475 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.46 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 104.7 MB in the beginning and 173.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.66 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 169.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1052.53 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 169.4 MB in the beginning and 193.1 MB in the end (delta: -23.6 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24871.70 ms. Allocated memory was 234.4 MB in the beginning and 591.4 MB in the end (delta: 357.0 MB). Free memory was 191.7 MB in the beginning and 483.8 MB in the end (delta: -292.1 MB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 1722 SDslu, 881 SDs, 0 SdLazy, 4213 SolverSat, 1157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...