/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:54:20,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:54:20,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:54:20,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:54:20,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:54:20,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:54:20,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:54:20,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:54:20,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:54:20,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:54:20,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:54:20,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:54:20,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:54:20,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:54:20,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:54:20,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:54:20,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:54:20,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:54:20,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:54:20,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:54:20,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:54:20,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:54:20,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:54:20,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:54:20,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:54:20,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:54:20,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:54:20,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:54:20,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:54:20,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:54:20,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:54:20,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:54:20,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:54:20,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:54:20,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:54:20,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:54:20,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:54:20,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:54:20,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:54:20,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:54:20,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:54:20,621 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 11:54:20,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:54:20,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:54:20,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:54:20,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:54:20,662 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:54:20,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:54:20,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:54:20,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:54:20,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:54:20,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:54:20,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:54:20,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:54:20,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:54:20,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:54:20,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:54:20,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:54:20,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:54:20,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:54:20,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:54:20,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:54:20,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:54:20,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:54:20,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:54:20,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:54:20,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:54:20,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:54:20,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:54:20,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:54:20,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:54:20,668 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:54:20,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:54:21,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:54:21,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:54:21,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:54:21,022 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:54:21,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-18 11:54:21,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/098f759a5/223edaad03a9435ab99972406d4b1386/FLAG9e7adeec3 [2020-08-18 11:54:21,683 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:54:21,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-18 11:54:21,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/098f759a5/223edaad03a9435ab99972406d4b1386/FLAG9e7adeec3 [2020-08-18 11:54:21,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/098f759a5/223edaad03a9435ab99972406d4b1386 [2020-08-18 11:54:21,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:54:21,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:54:21,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:21,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:54:21,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:54:21,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:21" (1/1) ... [2020-08-18 11:54:21,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:21, skipping insertion in model container [2020-08-18 11:54:21,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:21" (1/1) ... [2020-08-18 11:54:21,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:54:22,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:54:22,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:22,457 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:54:22,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:22,599 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:54:22,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22 WrapperNode [2020-08-18 11:54:22,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:22,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:54:22,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:54:22,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:54:22,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (1/1) ... [2020-08-18 11:54:22,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:54:22,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:54:22,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:54:22,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:54:22,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (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 11:54:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:54:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:54:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:54:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:54:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:54:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:54:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:54:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:54:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:54:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:54:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:54:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:54:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:54:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:54:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:54:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:54:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:54:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:54:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:54:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:54:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:54:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:54:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:54:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:54:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:54:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:54:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:54:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:54:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:54:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:54:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:54:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:54:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:54:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:54:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:54:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:54:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:54:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:54:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:54:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:54:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:54:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:54:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:54:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:54:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:54:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:54:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:54:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:54:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:54:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:54:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:54:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:54:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:54:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:54:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:54:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:54:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:54:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:54:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:54:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:54:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:54:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:54:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:54:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:54:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:54:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:54:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:54:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:54:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:54:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:54:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:54:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:54:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:54:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:54:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:54:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:54:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:54:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:54:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:54:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:54:23,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:54:23,934 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:54:23,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:23 BoogieIcfgContainer [2020-08-18 11:54:23,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:54:23,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:54:23,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:54:23,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:54:23,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:54:21" (1/3) ... [2020-08-18 11:54:23,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5894df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:23, skipping insertion in model container [2020-08-18 11:54:23,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:22" (2/3) ... [2020-08-18 11:54:23,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5894df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:23, skipping insertion in model container [2020-08-18 11:54:23,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:23" (3/3) ... [2020-08-18 11:54:23,948 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-08-18 11:54:23,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:54:23,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:54:23,980 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:54:24,007 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:54:24,007 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:54:24,007 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:54:24,007 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:54:24,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:54:24,008 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:54:24,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:54:24,008 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:54:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-18 11:54:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 11:54:24,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:24,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:24,044 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:24,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:24,051 INFO L82 PathProgramCache]: Analyzing trace with hash -749162492, now seen corresponding path program 1 times [2020-08-18 11:54:24,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:24,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103773393] [2020-08-18 11:54:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,677 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:54:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,839 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 11:54:24,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103773393] [2020-08-18 11:54:24,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:24,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:54:24,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280156706] [2020-08-18 11:54:24,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:54:24,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:24,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:54:24,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:24,871 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-18 11:54:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:26,022 INFO L93 Difference]: Finished difference Result 287 states and 378 transitions. [2020-08-18 11:54:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:54:26,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 11:54:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:26,038 INFO L225 Difference]: With dead ends: 287 [2020-08-18 11:54:26,038 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 11:54:26,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 11:54:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-18 11:54:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 11:54:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-08-18 11:54:26,127 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 46 [2020-08-18 11:54:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:26,128 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-08-18 11:54:26,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:54:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-08-18 11:54:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 11:54:26,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:26,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:26,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:54:26,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:26,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1435333190, now seen corresponding path program 1 times [2020-08-18 11:54:26,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:26,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605678320] [2020-08-18 11:54:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,499 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:26,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:54:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:26,541 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 11:54:26,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605678320] [2020-08-18 11:54:26,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:26,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:54:26,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563257027] [2020-08-18 11:54:26,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:54:26,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:26,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:54:26,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:54:26,545 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 4 states. [2020-08-18 11:54:27,001 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:27,852 INFO L93 Difference]: Finished difference Result 220 states and 269 transitions. [2020-08-18 11:54:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:54:27,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 11:54:27,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:27,855 INFO L225 Difference]: With dead ends: 220 [2020-08-18 11:54:27,856 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 11:54:27,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:54:27,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 11:54:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 11:54:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 11:54:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-18 11:54:27,894 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 47 [2020-08-18 11:54:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:27,895 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-18 11:54:27,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:54:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-18 11:54:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 11:54:27,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:27,897 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 11:54:27,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:54:27,898 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash 325618258, now seen corresponding path program 1 times [2020-08-18 11:54:27,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:27,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206937190] [2020-08-18 11:54:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,230 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:28,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:54:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:54:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:28,320 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 11:54:28,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206937190] [2020-08-18 11:54:28,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:28,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:28,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278403475] [2020-08-18 11:54:28,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:28,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:28,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:28,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:28,322 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 8 states. [2020-08-18 11:54:28,700 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:28,987 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:29,265 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:29,512 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:30,589 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2020-08-18 11:54:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:54:30,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 11:54:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:30,593 INFO L225 Difference]: With dead ends: 229 [2020-08-18 11:54:30,593 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 11:54:30,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:54:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 11:54:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 11:54:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 11:54:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-18 11:54:30,627 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 51 [2020-08-18 11:54:30,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:30,627 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-18 11:54:30,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:30,628 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-18 11:54:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 11:54:30,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:30,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:30,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:54:30,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:30,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1759847866, now seen corresponding path program 1 times [2020-08-18 11:54:30,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:30,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281725323] [2020-08-18 11:54:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:30,894 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:30,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:30,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:30,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:54:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:54:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:54:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:31,019 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 11:54:31,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281725323] [2020-08-18 11:54:31,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:31,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:54:31,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416488325] [2020-08-18 11:54:31,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:54:31,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:31,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:54:31,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:54:31,022 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 6 states. [2020-08-18 11:54:31,345 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:32,423 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:33,055 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2020-08-18 11:54:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:54:33,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 11:54:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:33,060 INFO L225 Difference]: With dead ends: 321 [2020-08-18 11:54:33,060 INFO L226 Difference]: Without dead ends: 231 [2020-08-18 11:54:33,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:54:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-08-18 11:54:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 190. [2020-08-18 11:54:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 11:54:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-08-18 11:54:33,117 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 64 [2020-08-18 11:54:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:33,117 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-08-18 11:54:33,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:54:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-08-18 11:54:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 11:54:33,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:33,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:33,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:54:33,120 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1017680522, now seen corresponding path program 1 times [2020-08-18 11:54:33,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:33,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110476010] [2020-08-18 11:54:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,441 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:33,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:54:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 11:54:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:54:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:33,550 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 11:54:33,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110476010] [2020-08-18 11:54:33,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:33,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:33,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025051035] [2020-08-18 11:54:33,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:33,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:33,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:33,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:33,552 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 8 states. [2020-08-18 11:54:33,977 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:35,008 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:35,279 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:35,520 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:35,735 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:36,021 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:37,010 INFO L93 Difference]: Finished difference Result 565 states and 701 transitions. [2020-08-18 11:54:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:54:37,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-18 11:54:37,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:37,016 INFO L225 Difference]: With dead ends: 565 [2020-08-18 11:54:37,016 INFO L226 Difference]: Without dead ends: 399 [2020-08-18 11:54:37,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:54:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-18 11:54:37,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 335. [2020-08-18 11:54:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-18 11:54:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 384 transitions. [2020-08-18 11:54:37,091 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 384 transitions. Word has length 78 [2020-08-18 11:54:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:37,092 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 384 transitions. [2020-08-18 11:54:37,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 384 transitions. [2020-08-18 11:54:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 11:54:37,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:37,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:37,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:54:37,095 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:37,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1476513266, now seen corresponding path program 1 times [2020-08-18 11:54:37,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:37,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999162781] [2020-08-18 11:54:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,419 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:37,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 11:54:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 11:54:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:37,531 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 11:54:37,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999162781] [2020-08-18 11:54:37,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:37,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:54:37,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199458739] [2020-08-18 11:54:37,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:54:37,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:37,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:54:37,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:54:37,534 INFO L87 Difference]: Start difference. First operand 335 states and 384 transitions. Second operand 9 states. [2020-08-18 11:54:37,889 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:38,937 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:39,166 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:39,418 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:39,672 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:39,940 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:40,898 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2020-08-18 11:54:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:54:40,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-18 11:54:40,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:40,903 INFO L225 Difference]: With dead ends: 438 [2020-08-18 11:54:40,904 INFO L226 Difference]: Without dead ends: 435 [2020-08-18 11:54:40,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:54:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-18 11:54:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 335. [2020-08-18 11:54:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-18 11:54:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 383 transitions. [2020-08-18 11:54:40,979 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 383 transitions. Word has length 82 [2020-08-18 11:54:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:40,980 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 383 transitions. [2020-08-18 11:54:40,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:54:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 383 transitions. [2020-08-18 11:54:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:54:40,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:40,982 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 11:54:40,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:54:40,982 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:40,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1573868364, now seen corresponding path program 1 times [2020-08-18 11:54:40,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:40,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124094688] [2020-08-18 11:54:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,302 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:54:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:54:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:41,430 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 11:54:41,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124094688] [2020-08-18 11:54:41,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:41,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:54:41,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860644841] [2020-08-18 11:54:41,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:54:41,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:41,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:54:41,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:54:41,433 INFO L87 Difference]: Start difference. First operand 335 states and 383 transitions. Second operand 9 states. [2020-08-18 11:54:42,282 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:42,505 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:54:42,740 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:42,976 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:43,961 INFO L93 Difference]: Finished difference Result 750 states and 926 transitions. [2020-08-18 11:54:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:54:43,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 11:54:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:43,965 INFO L225 Difference]: With dead ends: 750 [2020-08-18 11:54:43,966 INFO L226 Difference]: Without dead ends: 439 [2020-08-18 11:54:43,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:54:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-18 11:54:44,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 345. [2020-08-18 11:54:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-18 11:54:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-18 11:54:44,034 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 83 [2020-08-18 11:54:44,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:44,034 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-18 11:54:44,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:54:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-18 11:54:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:54:44,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:44,036 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 11:54:44,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:54:44,037 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:44,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1596500618, now seen corresponding path program 1 times [2020-08-18 11:54:44,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:44,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111251605] [2020-08-18 11:54:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,291 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:54:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:54:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:44,408 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 11:54:44,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111251605] [2020-08-18 11:54:44,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:44,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 11:54:44,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852681627] [2020-08-18 11:54:44,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:54:44,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:44,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:54:44,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:54:44,414 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 11 states. [2020-08-18 11:54:44,867 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:45,118 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:45,342 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:45,912 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:46,162 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:46,407 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:47,446 INFO L93 Difference]: Finished difference Result 774 states and 966 transitions. [2020-08-18 11:54:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:54:47,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-18 11:54:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:47,450 INFO L225 Difference]: With dead ends: 774 [2020-08-18 11:54:47,450 INFO L226 Difference]: Without dead ends: 453 [2020-08-18 11:54:47,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:54:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-08-18 11:54:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 353. [2020-08-18 11:54:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-18 11:54:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 401 transitions. [2020-08-18 11:54:47,534 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 401 transitions. Word has length 83 [2020-08-18 11:54:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:47,534 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 401 transitions. [2020-08-18 11:54:47,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:54:47,535 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 401 transitions. [2020-08-18 11:54:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:54:47,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:47,537 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 11:54:47,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:54:47,537 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1672974679, now seen corresponding path program 1 times [2020-08-18 11:54:47,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:47,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931381729] [2020-08-18 11:54:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,796 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:47,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:54:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:54:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,933 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 11:54:47,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931381729] [2020-08-18 11:54:47,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:47,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:54:47,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499400672] [2020-08-18 11:54:47,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:54:47,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:47,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:54:47,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:54:47,936 INFO L87 Difference]: Start difference. First operand 353 states and 401 transitions. Second operand 7 states. [2020-08-18 11:54:48,452 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:49,177 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:51,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:51,537 INFO L93 Difference]: Finished difference Result 1077 states and 1388 transitions. [2020-08-18 11:54:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 11:54:51,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-18 11:54:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:51,546 INFO L225 Difference]: With dead ends: 1077 [2020-08-18 11:54:51,546 INFO L226 Difference]: Without dead ends: 748 [2020-08-18 11:54:51,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:54:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-08-18 11:54:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 649. [2020-08-18 11:54:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 11:54:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 771 transitions. [2020-08-18 11:54:51,828 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 771 transitions. Word has length 83 [2020-08-18 11:54:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:51,833 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 771 transitions. [2020-08-18 11:54:51,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:54:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 771 transitions. [2020-08-18 11:54:51,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 11:54:51,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:51,837 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] [2020-08-18 11:54:51,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:54:51,837 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:51,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1457224847, now seen corresponding path program 1 times [2020-08-18 11:54:51,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:51,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393710883] [2020-08-18 11:54:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:54:51,914 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:54:51,915 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:54:51,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:54:51,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:54:51 BoogieIcfgContainer [2020-08-18 11:54:51,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:54:51,966 INFO L168 Benchmark]: Toolchain (without parser) took 30013.25 ms. Allocated memory was 140.0 MB in the beginning and 612.9 MB in the end (delta: 472.9 MB). Free memory was 100.5 MB in the beginning and 547.8 MB in the end (delta: -447.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,967 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 11:54:51,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.26 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 100.2 MB in the beginning and 169.0 MB in the end (delta: -68.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,974 INFO L168 Benchmark]: Boogie Preprocessor took 118.13 ms. Allocated memory is still 201.9 MB. Free memory was 169.0 MB in the beginning and 163.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,975 INFO L168 Benchmark]: RCFGBuilder took 1220.42 ms. Allocated memory was 201.9 MB in the beginning and 236.5 MB in the end (delta: 34.6 MB). Free memory was 163.6 MB in the beginning and 194.5 MB in the end (delta: -30.9 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,978 INFO L168 Benchmark]: TraceAbstraction took 28020.53 ms. Allocated memory was 236.5 MB in the beginning and 612.9 MB in the end (delta: 376.4 MB). Free memory was 193.1 MB in the beginning and 547.8 MB in the end (delta: -354.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:51,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.26 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 100.2 MB in the beginning and 169.0 MB in the end (delta: -68.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.13 ms. Allocated memory is still 201.9 MB. Free memory was 169.0 MB in the beginning and 163.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1220.42 ms. Allocated memory was 201.9 MB in the beginning and 236.5 MB in the end (delta: 34.6 MB). Free memory was 163.6 MB in the beginning and 194.5 MB in the end (delta: -30.9 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28020.53 ms. Allocated memory was 236.5 MB in the beginning and 612.9 MB in the end (delta: 376.4 MB). Free memory was 193.1 MB in the beginning and 547.8 MB in the end (delta: -354.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L832] int waterLevel = 1; [L833] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L574] int retValue_acc ; [L577] retValue_acc = 1 [L578] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L850] COND TRUE waterLevel < 2 [L851] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L862] COND FALSE !(\read(methaneLevelCritical)) [L865] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) [L819] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] CALL processEnvironment() [L650] int tmp ; [L653] COND FALSE !(\read(pumpRunning)) [L668] CALL processEnvironment__wrappee__highWaterSensor() [L624] int tmp ; [L627] COND TRUE ! pumpRunning [L629] CALL, EXPR isHighWaterLevel() [L747] int retValue_acc ; [L748] int tmp ; [L749] int tmp___0 ; [L753] CALL, EXPR isHighWaterSensorDry() [L912] int retValue_acc ; [L915] COND FALSE !(waterLevel < 2) [L919] retValue_acc = 0 [L920] return (retValue_acc); [L753] RET, EXPR isHighWaterSensorDry() [L753] tmp = isHighWaterSensorDry() [L755] COND FALSE !(\read(tmp)) [L758] tmp___0 = 1 [L760] retValue_acc = tmp___0 [L761] return (retValue_acc); [L629] RET, EXPR isHighWaterLevel() [L629] tmp = isHighWaterLevel() [L631] COND TRUE \read(tmp) [L633] CALL activatePump() [L678] pumpRunning = 1 [L633] RET activatePump() [L668] RET processEnvironment__wrappee__highWaterSensor() [L604] RET processEnvironment() [L610] CALL __utac_acc__Specification1_spec__1() [L514] int tmp ; [L515] int tmp___0 ; [L519] CALL, EXPR isMethaneLevelCritical() [L871] int retValue_acc ; [L874] retValue_acc = methaneLevelCritical [L875] return (retValue_acc); [L519] RET, EXPR isMethaneLevelCritical() [L519] tmp = isMethaneLevelCritical() [L521] COND TRUE \read(tmp) [L523] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L523] RET, EXPR isPumpRunning() [L523] tmp___0 = isPumpRunning() [L525] COND TRUE \read(tmp___0) [L527] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1006 SDtfs, 1711 SDslu, 936 SDs, 0 SdLazy, 4718 SolverSat, 1069 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=649occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...