/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:09:58,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:09:58,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:09:58,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:09:58,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:09:58,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:09:58,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:09:58,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:09:58,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:09:58,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:09:58,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:09:58,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:09:58,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:09:58,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:09:58,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:09:58,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:09:58,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:09:58,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:09:58,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:09:58,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:09:58,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:09:58,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:09:58,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:09:58,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:09:58,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:09:58,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:09:58,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:09:58,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:09:58,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:09:58,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:09:58,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:09:58,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:09:58,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:09:58,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:09:58,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:09:58,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:09:58,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:09:58,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:09:58,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:09:58,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:09:58,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:09:58,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:09:58,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:09:58,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:09:58,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:09:58,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:09:58,511 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:09:58,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:09:58,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:09:58,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:09:58,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:09:58,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:09:58,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:09:58,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:09:58,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:09:58,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:09:58,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:09:58,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:09:58,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:09:58,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:09:58,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:09:58,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:09:58,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:09:58,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:09:58,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:09:58,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:09:58,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:09:58,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:09:58,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:09:58,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:09:58,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:09:58,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:09:58,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:09:58,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:09:58,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:09:58,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:09:58,861 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:09:58,862 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-08-19 00:09:58,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed35ca611/31fbbc28d01b494f8598482cd2317b9f/FLAG84e4eac1b [2020-08-19 00:09:59,469 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:09:59,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-08-19 00:09:59,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed35ca611/31fbbc28d01b494f8598482cd2317b9f/FLAG84e4eac1b [2020-08-19 00:09:59,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed35ca611/31fbbc28d01b494f8598482cd2317b9f [2020-08-19 00:09:59,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:09:59,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:09:59,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:09:59,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:09:59,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:09:59,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:09:59" (1/1) ... [2020-08-19 00:09:59,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:59, skipping insertion in model container [2020-08-19 00:09:59,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:09:59" (1/1) ... [2020-08-19 00:09:59,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:09:59,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:10:00,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:10:00,182 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:10:00,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:10:00,415 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:10:00,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00 WrapperNode [2020-08-19 00:10:00,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:10:00,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:10:00,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:10:00,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:10:00,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (1/1) ... [2020-08-19 00:10:00,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (1/1) ... [2020-08-19 00:10:00,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (1/1) ... [2020-08-19 00:10:00,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (1/1) ... [2020-08-19 00:10:00,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (1/1) ... [2020-08-19 00:10:00,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (1/1) ... [2020-08-19 00:10:00,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (1/1) ... [2020-08-19 00:10:00,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:10:00,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:10:00,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:10:00,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:10:00,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:10:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:10:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:10:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:10:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:10:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:10:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:10:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:10:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:10:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:10:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:10:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:10:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:10:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:10:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:10:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:10:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:10:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:10:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:10:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:10:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:10:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:10:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:10:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:10:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:10:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:10:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:10:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:10:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:10:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:10:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:10:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:10:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:10:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:10:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:10:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:10:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:10:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:10:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:10:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:10:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:10:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:10:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:10:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:10:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:10:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:10:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:10:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:10:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:10:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:10:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:10:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:10:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:10:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:10:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:10:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:10:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:10:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:10:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:10:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:10:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:10:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:10:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:10:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:10:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:10:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:10:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:10:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:10:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:10:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:10:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:10:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:10:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:10:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:10:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:10:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:10:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:10:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:10:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:10:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:10:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:10:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:10:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:10:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:10:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:10:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:10:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:10:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:10:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:10:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:10:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:10:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:10:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:10:01,783 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:10:01,784 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:10:01,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:10:01 BoogieIcfgContainer [2020-08-19 00:10:01,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:10:01,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:10:01,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:10:01,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:10:01,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:09:59" (1/3) ... [2020-08-19 00:10:01,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c46bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:10:01, skipping insertion in model container [2020-08-19 00:10:01,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:00" (2/3) ... [2020-08-19 00:10:01,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c46bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:10:01, skipping insertion in model container [2020-08-19 00:10:01,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:10:01" (3/3) ... [2020-08-19 00:10:01,797 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-08-19 00:10:01,808 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:10:01,815 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:10:01,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:10:01,851 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:10:01,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:10:01,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:10:01,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:10:01,852 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:10:01,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:10:01,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:10:01,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:10:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-19 00:10:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:10:01,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:01,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:10:01,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:01,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1020125937, now seen corresponding path program 1 times [2020-08-19 00:10:01,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:01,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936302294] [2020-08-19 00:10:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,617 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:02,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:10:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:10:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:10:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:02,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936302294] [2020-08-19 00:10:02,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:02,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:10:02,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302383588] [2020-08-19 00:10:02,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:10:02,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:02,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:10:02,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:10:02,747 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-19 00:10:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:03,861 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-08-19 00:10:03,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:10:03,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 00:10:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:03,880 INFO L225 Difference]: With dead ends: 282 [2020-08-19 00:10:03,881 INFO L226 Difference]: Without dead ends: 153 [2020-08-19 00:10:03,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:10:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-19 00:10:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-08-19 00:10:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 00:10:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-19 00:10:03,999 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-08-19 00:10:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:04,000 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-19 00:10:04,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:10:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-19 00:10:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 00:10:04,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:04,005 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] [2020-08-19 00:10:04,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:10:04,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002315, now seen corresponding path program 1 times [2020-08-19 00:10:04,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:04,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701870061] [2020-08-19 00:10:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,377 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:10:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:10:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:10:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:04,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701870061] [2020-08-19 00:10:04,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:04,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:10:04,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554700021] [2020-08-19 00:10:04,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:10:04,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:04,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:10:04,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:10:04,453 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-08-19 00:10:04,865 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:10:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:05,575 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-08-19 00:10:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:10:05,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 00:10:05,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:05,579 INFO L225 Difference]: With dead ends: 205 [2020-08-19 00:10:05,580 INFO L226 Difference]: Without dead ends: 137 [2020-08-19 00:10:05,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:10:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-19 00:10:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-08-19 00:10:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 00:10:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-08-19 00:10:05,616 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-08-19 00:10:05,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:05,617 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-08-19 00:10:05,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:10:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-08-19 00:10:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 00:10:05,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:05,620 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] [2020-08-19 00:10:05,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:10:05,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:05,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:05,621 INFO L82 PathProgramCache]: Analyzing trace with hash -979616740, now seen corresponding path program 1 times [2020-08-19 00:10:05,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:05,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352595212] [2020-08-19 00:10:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:05,987 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:06,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:06,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:10:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:06,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:10:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:06,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:10:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:06,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352595212] [2020-08-19 00:10:06,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:06,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:10:06,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811887778] [2020-08-19 00:10:06,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:10:06,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:06,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:10:06,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:10:06,118 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-08-19 00:10:06,476 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:06,782 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:07,018 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:07,243 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:07,961 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:10:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:09,623 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2020-08-19 00:10:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:10:09,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 00:10:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:09,632 INFO L225 Difference]: With dead ends: 390 [2020-08-19 00:10:09,633 INFO L226 Difference]: Without dead ends: 303 [2020-08-19 00:10:09,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:10:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-19 00:10:09,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-08-19 00:10:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 00:10:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-08-19 00:10:09,719 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 58 [2020-08-19 00:10:09,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:09,720 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-08-19 00:10:09,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:10:09,720 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-08-19 00:10:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 00:10:09,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:09,723 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] [2020-08-19 00:10:09,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:10:09,724 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1983050375, now seen corresponding path program 1 times [2020-08-19 00:10:09,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:09,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619629512] [2020-08-19 00:10:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,009 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:10:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:10:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:10:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:10:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:10,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619629512] [2020-08-19 00:10:10,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:10,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:10:10,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679465082] [2020-08-19 00:10:10,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:10:10,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:10,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:10:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:10:10,104 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 8 states. [2020-08-19 00:10:10,499 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:11,769 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:12,085 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:12,372 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:12,625 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:13,274 INFO L93 Difference]: Finished difference Result 741 states and 971 transitions. [2020-08-19 00:10:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:10:13,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 00:10:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:13,285 INFO L225 Difference]: With dead ends: 741 [2020-08-19 00:10:13,285 INFO L226 Difference]: Without dead ends: 523 [2020-08-19 00:10:13,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:10:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-19 00:10:13,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2020-08-19 00:10:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-19 00:10:13,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 563 transitions. [2020-08-19 00:10:13,442 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 563 transitions. Word has length 63 [2020-08-19 00:10:13,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:13,442 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 563 transitions. [2020-08-19 00:10:13,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:10:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 563 transitions. [2020-08-19 00:10:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 00:10:13,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:13,448 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] [2020-08-19 00:10:13,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:10:13,448 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:13,449 INFO L82 PathProgramCache]: Analyzing trace with hash -572770771, now seen corresponding path program 1 times [2020-08-19 00:10:13,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:13,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345768630] [2020-08-19 00:10:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,705 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:13,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:10:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:10:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:10:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:10:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 00:10:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:13,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345768630] [2020-08-19 00:10:13,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:13,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:10:13,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156911489] [2020-08-19 00:10:13,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:10:13,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:13,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:10:13,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:10:13,819 INFO L87 Difference]: Start difference. First operand 457 states and 563 transitions. Second operand 6 states. [2020-08-19 00:10:14,185 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:15,041 INFO L93 Difference]: Finished difference Result 806 states and 1047 transitions. [2020-08-19 00:10:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:10:15,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-19 00:10:15,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:15,044 INFO L225 Difference]: With dead ends: 806 [2020-08-19 00:10:15,045 INFO L226 Difference]: Without dead ends: 373 [2020-08-19 00:10:15,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:10:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-08-19 00:10:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-08-19 00:10:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-19 00:10:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-08-19 00:10:15,110 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-08-19 00:10:15,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:15,111 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-08-19 00:10:15,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:10:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-08-19 00:10:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 00:10:15,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:15,113 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] [2020-08-19 00:10:15,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:10:15,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:15,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:15,115 INFO L82 PathProgramCache]: Analyzing trace with hash 935934029, now seen corresponding path program 1 times [2020-08-19 00:10:15,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:15,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939908505] [2020-08-19 00:10:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:10:15,176 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:10:15,176 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:10:15,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:10:15,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:10:15 BoogieIcfgContainer [2020-08-19 00:10:15,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:10:15,205 INFO L168 Benchmark]: Toolchain (without parser) took 15443.09 ms. Allocated memory was 148.9 MB in the beginning and 468.2 MB in the end (delta: 319.3 MB). Free memory was 104.4 MB in the beginning and 307.4 MB in the end (delta: -203.0 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:15,206 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:10:15,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.54 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 104.2 MB in the beginning and 175.0 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:15,208 INFO L168 Benchmark]: Boogie Preprocessor took 86.30 ms. Allocated memory is still 205.5 MB. Free memory was 175.0 MB in the beginning and 171.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:15,209 INFO L168 Benchmark]: RCFGBuilder took 1286.05 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 171.0 MB in the beginning and 193.2 MB in the end (delta: -22.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:15,209 INFO L168 Benchmark]: TraceAbstraction took 13413.03 ms. Allocated memory was 233.3 MB in the beginning and 468.2 MB in the end (delta: 234.9 MB). Free memory was 191.9 MB in the beginning and 307.4 MB in the end (delta: -115.5 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:15,213 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.54 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 104.2 MB in the beginning and 175.0 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.30 ms. Allocated memory is still 205.5 MB. Free memory was 175.0 MB in the beginning and 171.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1286.05 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 171.0 MB in the beginning and 193.2 MB in the end (delta: -22.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13413.03 ms. Allocated memory was 233.3 MB in the beginning and 468.2 MB in the end (delta: 234.9 MB). Free memory was 191.9 MB in the beginning and 307.4 MB in the end (delta: -115.5 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 927]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L522] int retValue_acc ; [L523] int tmp ; [L527] FCALL select_helpers() [L528] FCALL select_features() [L529] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L529] RET, EXPR valid_product() [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) [L533] FCALL setup() [L534] CALL runTest() [L516] CALL test() [L766] int splverifierCounter ; [L767] int tmp ; [L768] int tmp___0 ; [L769] int tmp___1 ; [L770] int tmp___2 ; [L773] splverifierCounter = 0 [L775] COND TRUE 1 [L777] COND TRUE splverifierCounter < 4 [L783] tmp = __VERIFIER_nondet_int() [L785] COND TRUE \read(tmp) [L787] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L787] RET waterRise() [L793] tmp___0 = __VERIFIER_nondet_int() [L795] COND FALSE !(\read(tmp___0)) [L803] tmp___2 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___2)) [L811] tmp___1 = __VERIFIER_nondet_int() [L813] COND TRUE \read(tmp___1) [L815] CALL stopSystem() [L745] COND FALSE !(\read(pumpRunning)) [L752] systemActive = 0 [L815] RET stopSystem() [L822] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND FALSE !(\read(systemActive)) [L612] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L678] int retValue_acc ; [L681] retValue_acc = pumpRunning [L682] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L927] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 843 SDslu, 385 SDs, 0 SdLazy, 1890 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 236 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...