/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:42:53,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:42:53,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:42:53,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:42:53,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:42:53,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:42:53,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:42:53,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:42:53,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:42:53,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:42:53,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:42:53,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:42:53,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:42:53,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:42:53,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:42:53,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:42:53,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:42:53,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:42:53,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:42:53,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:42:53,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:42:53,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:42:53,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:42:53,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:42:53,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:42:53,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:42:53,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:42:53,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:42:53,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:42:53,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:42:53,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:42:53,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:42:53,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:42:53,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:42:53,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:42:53,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:42:53,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:42:53,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:42:53,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:42:53,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:42:53,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:42:53,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:42:53,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:42:53,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:42:53,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:42:53,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:42:53,583 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:42:53,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:42:53,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:42:53,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:42:53,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:42:53,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:42:53,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:42:53,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:42:53,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:42:53,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:42:53,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:42:53,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:42:53,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:42:53,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:42:53,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:42:53,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:42:53,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:42:53,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:42:53,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:42:53,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:42:53,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:42:53,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:42:53,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:42:53,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:42:53,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:42:53,590 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:42:53,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:42:53,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:42:53,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:42:53,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:42:53,933 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:42:53,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-18 21:42:54,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0dcc002d/08ea1b2b0b874dc487000daeba50c7e1/FLAG47ea7ee99 [2020-08-18 21:42:54,500 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:42:54,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-18 21:42:54,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0dcc002d/08ea1b2b0b874dc487000daeba50c7e1/FLAG47ea7ee99 [2020-08-18 21:42:54,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0dcc002d/08ea1b2b0b874dc487000daeba50c7e1 [2020-08-18 21:42:54,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:42:54,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:42:54,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:42:54,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:42:54,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:42:54,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:42:54" (1/1) ... [2020-08-18 21:42:54,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4559ae87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:54, skipping insertion in model container [2020-08-18 21:42:54,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:42:54" (1/1) ... [2020-08-18 21:42:54,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:42:54,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:42:55,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:42:55,423 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:42:55,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:42:55,532 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:42:55,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55 WrapperNode [2020-08-18 21:42:55,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:42:55,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:42:55,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:42:55,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:42:55,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (1/1) ... [2020-08-18 21:42:55,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (1/1) ... [2020-08-18 21:42:55,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (1/1) ... [2020-08-18 21:42:55,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (1/1) ... [2020-08-18 21:42:55,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (1/1) ... [2020-08-18 21:42:55,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (1/1) ... [2020-08-18 21:42:55,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (1/1) ... [2020-08-18 21:42:55,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:42:55,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:42:55,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:42:55,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:42:55,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:42:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:42:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:42:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:42:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:42:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:42:55,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:42:55,725 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:42:55,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:42:55,725 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:42:55,725 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:42:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:42:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:42:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:42:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:42:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:42:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:42:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 21:42:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 21:42:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:42:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:42:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:42:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:42:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:42:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:42:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:42:55,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:42:55,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:42:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:42:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:42:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:42:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:42:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:42:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:42:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:42:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:42:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:42:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:42:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:42:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 21:42:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:42:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:42:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:42:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:42:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:42:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:42:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:42:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:42:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:42:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:42:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 21:42:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:42:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:42:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:42:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:42:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:42:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:42:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:42:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:42:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:42:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:42:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:42:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:42:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:42:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:42:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 21:42:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:42:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:42:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:42:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:42:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:42:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:42:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:42:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:42:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:42:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:42:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:42:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:42:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:42:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:42:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:42:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:42:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:42:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 21:42:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:42:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:42:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:42:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:42:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:42:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:42:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:42:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:42:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:42:56,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:42:56,959 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:42:56,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:42:56 BoogieIcfgContainer [2020-08-18 21:42:56,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:42:56,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:42:56,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:42:56,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:42:56,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:42:54" (1/3) ... [2020-08-18 21:42:56,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457a3601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:42:56, skipping insertion in model container [2020-08-18 21:42:56,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:42:55" (2/3) ... [2020-08-18 21:42:56,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457a3601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:42:56, skipping insertion in model container [2020-08-18 21:42:56,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:42:56" (3/3) ... [2020-08-18 21:42:56,973 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2020-08-18 21:42:56,984 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:42:56,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:42:57,005 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:42:57,028 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:42:57,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:42:57,028 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:42:57,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:42:57,029 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:42:57,029 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:42:57,029 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:42:57,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:42:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-18 21:42:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 21:42:57,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:42:57,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:42:57,064 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:42:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:42:57,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1720198034, now seen corresponding path program 1 times [2020-08-18 21:42:57,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:42:57,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866821768] [2020-08-18 21:42:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:42:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,776 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:42:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:42:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:42:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:42:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:42:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:42:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 21:42:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:42:57,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866821768] [2020-08-18 21:42:57,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:42:57,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:42:57,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532639229] [2020-08-18 21:42:57,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:42:57,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:42:57,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:42:57,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:42:57,928 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-08-18 21:42:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:42:59,094 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2020-08-18 21:42:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:42:59,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 21:42:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:42:59,112 INFO L225 Difference]: With dead ends: 258 [2020-08-18 21:42:59,112 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 21:42:59,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:42:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 21:42:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2020-08-18 21:42:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 21:42:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-18 21:42:59,207 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 51 [2020-08-18 21:42:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:42:59,208 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-18 21:42:59,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:42:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-18 21:42:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 21:42:59,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:42:59,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:42:59,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:42:59,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:42:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:42:59,213 INFO L82 PathProgramCache]: Analyzing trace with hash 220132220, now seen corresponding path program 1 times [2020-08-18 21:42:59,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:42:59,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839361607] [2020-08-18 21:42:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:42:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,537 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:59,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:42:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:42:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:42:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:42:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:42:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:42:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:42:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:42:59,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839361607] [2020-08-18 21:42:59,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:42:59,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:42:59,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105151025] [2020-08-18 21:42:59,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:42:59,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:42:59,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:42:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:42:59,642 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 5 states. [2020-08-18 21:43:00,185 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:01,060 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2020-08-18 21:43:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:43:01,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 21:43:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:01,064 INFO L225 Difference]: With dead ends: 199 [2020-08-18 21:43:01,064 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 21:43:01,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:43:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 21:43:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 21:43:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 21:43:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-18 21:43:01,114 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 52 [2020-08-18 21:43:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:01,114 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-18 21:43:01,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:43:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-18 21:43:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 21:43:01,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:01,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:01,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:43:01,117 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:01,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:01,118 INFO L82 PathProgramCache]: Analyzing trace with hash 889380391, now seen corresponding path program 1 times [2020-08-18 21:43:01,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:01,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058835198] [2020-08-18 21:43:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,453 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:01,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 21:43:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:43:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:01,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058835198] [2020-08-18 21:43:01,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:01,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:43:01,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901242856] [2020-08-18 21:43:01,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:43:01,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:01,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:43:01,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:43:01,583 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 9 states. [2020-08-18 21:43:01,977 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:02,273 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:02,532 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:02,787 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:03,897 INFO L93 Difference]: Finished difference Result 212 states and 266 transitions. [2020-08-18 21:43:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:43:03,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 21:43:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:03,902 INFO L225 Difference]: With dead ends: 212 [2020-08-18 21:43:03,903 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 21:43:03,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:43:03,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 21:43:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 21:43:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 21:43:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-08-18 21:43:03,936 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 57 [2020-08-18 21:43:03,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:03,937 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-08-18 21:43:03,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:43:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-08-18 21:43:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 21:43:03,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:03,939 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] [2020-08-18 21:43:03,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:43:03,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:03,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:03,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1390934310, now seen corresponding path program 1 times [2020-08-18 21:43:03,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:03,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096952540] [2020-08-18 21:43:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,243 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:04,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:43:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:43:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:43:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:04,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096952540] [2020-08-18 21:43:04,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:04,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:43:04,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898830021] [2020-08-18 21:43:04,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:43:04,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:04,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:43:04,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:43:04,357 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 7 states. [2020-08-18 21:43:04,680 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:05,871 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:06,374 INFO L93 Difference]: Finished difference Result 302 states and 382 transitions. [2020-08-18 21:43:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:43:06,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-18 21:43:06,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:06,382 INFO L225 Difference]: With dead ends: 302 [2020-08-18 21:43:06,382 INFO L226 Difference]: Without dead ends: 225 [2020-08-18 21:43:06,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:43:06,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-18 21:43:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 176. [2020-08-18 21:43:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-18 21:43:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2020-08-18 21:43:06,449 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 65 [2020-08-18 21:43:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:06,450 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2020-08-18 21:43:06,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:43:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2020-08-18 21:43:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 21:43:06,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:06,452 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] [2020-08-18 21:43:06,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:43:06,452 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1075030192, now seen corresponding path program 1 times [2020-08-18 21:43:06,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:06,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571773667] [2020-08-18 21:43:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,772 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:06,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:43:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:43:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 21:43:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:06,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571773667] [2020-08-18 21:43:06,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:06,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:43:06,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612930785] [2020-08-18 21:43:06,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:43:06,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:06,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:43:06,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:43:06,932 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 12 states. [2020-08-18 21:43:07,408 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:07,645 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:07,873 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:08,663 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:08,900 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:09,148 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:09,407 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:10,182 INFO L93 Difference]: Finished difference Result 372 states and 462 transitions. [2020-08-18 21:43:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:43:10,183 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 21:43:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:10,185 INFO L225 Difference]: With dead ends: 372 [2020-08-18 21:43:10,186 INFO L226 Difference]: Without dead ends: 224 [2020-08-18 21:43:10,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 21:43:10,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-18 21:43:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 181. [2020-08-18 21:43:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-08-18 21:43:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2020-08-18 21:43:10,224 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 79 [2020-08-18 21:43:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:10,225 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2020-08-18 21:43:10,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:43:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2020-08-18 21:43:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 21:43:10,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:10,226 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] [2020-08-18 21:43:10,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:43:10,227 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:10,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:10,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1584503282, now seen corresponding path program 1 times [2020-08-18 21:43:10,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:10,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903725288] [2020-08-18 21:43:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,547 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:10,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:43:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 21:43:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 21:43:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:10,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903725288] [2020-08-18 21:43:10,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:10,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:43:10,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444033373] [2020-08-18 21:43:10,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:43:10,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:10,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:43:10,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:43:10,650 INFO L87 Difference]: Start difference. First operand 181 states and 208 transitions. Second operand 9 states. [2020-08-18 21:43:10,960 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:12,119 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:12,380 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:12,630 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:12,856 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:13,668 INFO L93 Difference]: Finished difference Result 539 states and 685 transitions. [2020-08-18 21:43:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 21:43:13,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 21:43:13,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:13,672 INFO L225 Difference]: With dead ends: 539 [2020-08-18 21:43:13,672 INFO L226 Difference]: Without dead ends: 386 [2020-08-18 21:43:13,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:43:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-08-18 21:43:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 310. [2020-08-18 21:43:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-08-18 21:43:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 356 transitions. [2020-08-18 21:43:13,747 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 356 transitions. Word has length 79 [2020-08-18 21:43:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:13,748 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 356 transitions. [2020-08-18 21:43:13,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:43:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 356 transitions. [2020-08-18 21:43:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 21:43:13,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:13,750 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] [2020-08-18 21:43:13,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:43:13,750 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:13,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1898506966, now seen corresponding path program 1 times [2020-08-18 21:43:13,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:13,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906702078] [2020-08-18 21:43:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,034 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:43:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 21:43:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:43:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:14,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906702078] [2020-08-18 21:43:14,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:14,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:43:14,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315969099] [2020-08-18 21:43:14,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:43:14,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:14,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:43:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:43:14,199 INFO L87 Difference]: Start difference. First operand 310 states and 356 transitions. Second operand 10 states. [2020-08-18 21:43:14,579 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:15,677 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:15,915 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:16,179 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:16,465 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:17,421 INFO L93 Difference]: Finished difference Result 706 states and 881 transitions. [2020-08-18 21:43:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:43:17,422 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 21:43:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:17,427 INFO L225 Difference]: With dead ends: 706 [2020-08-18 21:43:17,427 INFO L226 Difference]: Without dead ends: 424 [2020-08-18 21:43:17,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-18 21:43:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-18 21:43:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 309. [2020-08-18 21:43:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-18 21:43:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 353 transitions. [2020-08-18 21:43:17,502 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 353 transitions. Word has length 83 [2020-08-18 21:43:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:17,502 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 353 transitions. [2020-08-18 21:43:17,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:43:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 353 transitions. [2020-08-18 21:43:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 21:43:17,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:17,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:17,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:43:17,504 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:17,505 INFO L82 PathProgramCache]: Analyzing trace with hash -226819900, now seen corresponding path program 1 times [2020-08-18 21:43:17,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:17,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601988288] [2020-08-18 21:43:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,747 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:17,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:43:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 21:43:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 21:43:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:17,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601988288] [2020-08-18 21:43:17,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:17,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:43:17,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990349892] [2020-08-18 21:43:17,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:43:17,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:17,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:43:17,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:43:17,902 INFO L87 Difference]: Start difference. First operand 309 states and 353 transitions. Second operand 12 states. [2020-08-18 21:43:18,361 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:18,586 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:18,845 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:19,503 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:19,767 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:20,025 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:20,823 INFO L93 Difference]: Finished difference Result 713 states and 897 transitions. [2020-08-18 21:43:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:43:20,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 21:43:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:20,830 INFO L225 Difference]: With dead ends: 713 [2020-08-18 21:43:20,830 INFO L226 Difference]: Without dead ends: 432 [2020-08-18 21:43:20,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 21:43:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-08-18 21:43:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 317. [2020-08-18 21:43:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-18 21:43:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 361 transitions. [2020-08-18 21:43:20,943 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 361 transitions. Word has length 84 [2020-08-18 21:43:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:20,944 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 361 transitions. [2020-08-18 21:43:20,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:43:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 361 transitions. [2020-08-18 21:43:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 21:43:20,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:20,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:20,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:43:20,947 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:20,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1613023294, now seen corresponding path program 1 times [2020-08-18 21:43:20,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:20,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694250746] [2020-08-18 21:43:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,197 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:43:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 21:43:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 21:43:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:21,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694250746] [2020-08-18 21:43:21,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:21,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:43:21,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352299447] [2020-08-18 21:43:21,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:43:21,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:21,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:43:21,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:43:21,335 INFO L87 Difference]: Start difference. First operand 317 states and 361 transitions. Second operand 10 states. [2020-08-18 21:43:22,439 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:22,687 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:43:22,938 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:23,185 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:24,048 INFO L93 Difference]: Finished difference Result 715 states and 895 transitions. [2020-08-18 21:43:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:43:24,049 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-18 21:43:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:24,052 INFO L225 Difference]: With dead ends: 715 [2020-08-18 21:43:24,052 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 21:43:24,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:43:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 21:43:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 317. [2020-08-18 21:43:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-18 21:43:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 359 transitions. [2020-08-18 21:43:24,124 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 359 transitions. Word has length 84 [2020-08-18 21:43:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:24,125 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 359 transitions. [2020-08-18 21:43:24,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:43:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 359 transitions. [2020-08-18 21:43:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 21:43:24,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:24,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:24,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:43:24,127 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:24,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:24,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1884470469, now seen corresponding path program 1 times [2020-08-18 21:43:24,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:24,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016431197] [2020-08-18 21:43:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,441 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:43:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 21:43:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 21:43:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:24,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016431197] [2020-08-18 21:43:24,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:24,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:43:24,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053992077] [2020-08-18 21:43:24,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:43:24,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:24,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:43:24,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:43:24,632 INFO L87 Difference]: Start difference. First operand 317 states and 359 transitions. Second operand 8 states. [2020-08-18 21:43:25,093 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:25,629 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:27,813 INFO L93 Difference]: Finished difference Result 1041 states and 1362 transitions. [2020-08-18 21:43:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:43:27,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 21:43:27,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:27,820 INFO L225 Difference]: With dead ends: 1041 [2020-08-18 21:43:27,820 INFO L226 Difference]: Without dead ends: 752 [2020-08-18 21:43:27,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-18 21:43:27,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-08-18 21:43:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 607. [2020-08-18 21:43:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-18 21:43:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 711 transitions. [2020-08-18 21:43:27,991 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 711 transitions. Word has length 84 [2020-08-18 21:43:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:27,992 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 711 transitions. [2020-08-18 21:43:27,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:43:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 711 transitions. [2020-08-18 21:43:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 21:43:27,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:27,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:27,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:43:27,995 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash 713728159, now seen corresponding path program 1 times [2020-08-18 21:43:27,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:27,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144740470] [2020-08-18 21:43:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,312 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:43:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:43:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:43:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 21:43:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 21:43:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:28,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144740470] [2020-08-18 21:43:28,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:28,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:43:28,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949277579] [2020-08-18 21:43:28,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:43:28,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:28,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:43:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:43:28,420 INFO L87 Difference]: Start difference. First operand 607 states and 711 transitions. Second operand 8 states. [2020-08-18 21:43:28,796 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:30,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:30,624 INFO L93 Difference]: Finished difference Result 1199 states and 1560 transitions. [2020-08-18 21:43:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:43:30,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-18 21:43:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:30,631 INFO L225 Difference]: With dead ends: 1199 [2020-08-18 21:43:30,632 INFO L226 Difference]: Without dead ends: 1196 [2020-08-18 21:43:30,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-18 21:43:30,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-08-18 21:43:30,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 975. [2020-08-18 21:43:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-08-18 21:43:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1150 transitions. [2020-08-18 21:43:30,828 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1150 transitions. Word has length 88 [2020-08-18 21:43:30,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:30,829 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1150 transitions. [2020-08-18 21:43:30,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:43:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1150 transitions. [2020-08-18 21:43:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 21:43:30,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:30,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:30,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:43:30,833 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:30,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1128183326, now seen corresponding path program 1 times [2020-08-18 21:43:30,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:30,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319475718] [2020-08-18 21:43:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:43:30,897 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:43:30,897 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:43:30,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:43:30,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:43:30 BoogieIcfgContainer [2020-08-18 21:43:30,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:43:30,932 INFO L168 Benchmark]: Toolchain (without parser) took 36106.00 ms. Allocated memory was 137.9 MB in the beginning and 686.3 MB in the end (delta: 548.4 MB). Free memory was 99.7 MB in the beginning and 434.4 MB in the end (delta: -334.7 MB). Peak memory consumption was 213.7 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:30,933 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:43:30,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.42 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 99.5 MB in the beginning and 168.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:30,934 INFO L168 Benchmark]: Boogie Preprocessor took 104.02 ms. Allocated memory is still 199.8 MB. Free memory was 168.4 MB in the beginning and 164.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:30,935 INFO L168 Benchmark]: RCFGBuilder took 1322.32 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 164.2 MB in the beginning and 195.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:30,935 INFO L168 Benchmark]: TraceAbstraction took 33964.50 ms. Allocated memory was 230.2 MB in the beginning and 686.3 MB in the end (delta: 456.1 MB). Free memory was 195.2 MB in the beginning and 434.4 MB in the end (delta: -239.2 MB). Peak memory consumption was 216.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:43:30,938 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 705.42 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 99.5 MB in the beginning and 168.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.02 ms. Allocated memory is still 199.8 MB. Free memory was 168.4 MB in the beginning and 164.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1322.32 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 164.2 MB in the beginning and 195.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33964.50 ms. Allocated memory was 230.2 MB in the beginning and 686.3 MB in the end (delta: 456.1 MB). Free memory was 195.2 MB in the beginning and 434.4 MB in the end (delta: -239.2 MB). Peak memory consumption was 216.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 249]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L255] int methAndRunningLastTime ; [L498] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int pumpRunning = 0; [L766] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L320] int retValue_acc ; [L323] retValue_acc = 1 [L324] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L113] CALL __utac_acc__Specification2_spec__1() [L260] methAndRunningLastTime = 0 [L113] RET __utac_acc__Specification2_spec__1() [L114] CALL test() [L697] int splverifierCounter ; [L698] int tmp ; [L699] int tmp___0 ; [L700] int tmp___1 ; [L701] int tmp___2 ; [L704] splverifierCounter = 0 [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp) [L718] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L718] RET waterRise() [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___0) [L728] CALL changeMethaneLevel() [L181] COND FALSE !(\read(methaneLevelCritical)) [L184] methaneLevelCritical = 1 [L728] RET changeMethaneLevel() [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND FALSE !(\read(pumpRunning)) [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND TRUE ! pumpRunning [L806] CALL, EXPR isHighWaterLevel() [L898] int retValue_acc ; [L899] int tmp ; [L900] int tmp___0 ; [L904] CALL, EXPR isHighWaterSensorDry() [L231] int retValue_acc ; [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); [L904] RET, EXPR isHighWaterSensorDry() [L904] tmp = isHighWaterSensorDry() [L906] COND FALSE !(\read(tmp)) [L909] tmp___0 = 1 [L911] retValue_acc = tmp___0 [L912] return (retValue_acc); [L806] RET, EXPR isHighWaterLevel() [L806] tmp = isHighWaterLevel() [L808] COND TRUE \read(tmp) [L810] CALL activatePump() [L829] pumpRunning = 1 [L810] RET activatePump() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND FALSE !(\read(methAndRunningLastTime)) [L282] methAndRunningLastTime = 1 [L787] RET __utac_acc__Specification2_spec__2() [L751] RET timeShift() [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp)) [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp___0)) [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND TRUE \read(pumpRunning) [L774] CALL lowerWaterLevel() [L157] COND TRUE waterLevel > 0 [L158] waterLevel = waterLevel - 1 [L774] RET lowerWaterLevel() [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND FALSE !(! pumpRunning) [L819] FCALL processEnvironment__wrappee__base() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND TRUE \read(methAndRunningLastTime) [L279] CALL __automaton_fail() [L249] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.8s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 27.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1103 SDtfs, 3134 SDslu, 1466 SDs, 0 SdLazy, 6112 SolverSat, 2322 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=975occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 964 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 249077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...