/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:13:49,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:13:49,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:13:49,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:13:49,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:13:49,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:13:49,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:13:49,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:13:49,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:13:49,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:13:49,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:13:49,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:13:49,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:13:49,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:13:49,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:13:49,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:13:49,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:13:49,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:13:49,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:13:49,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:13:49,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:13:49,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:13:49,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:13:49,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:13:49,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:13:49,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:13:49,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:13:49,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:13:49,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:13:49,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:13:49,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:13:49,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:13:49,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:13:49,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:13:49,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:13:49,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:13:49,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:13:49,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:13:49,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:13:49,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:13:49,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:13:49,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:13:49,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:13:49,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:13:49,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:13:49,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:13:49,690 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:13:49,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:13:49,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:13:49,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:13:49,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:13:49,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:13:49,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:13:49,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:13:49,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:13:49,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:13:49,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:13:49,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:13:49,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:13:49,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:13:49,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:13:49,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:13:49,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:13:49,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:13:49,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:13:49,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:13:49,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:13:49,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:13:49,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:13:49,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:13:49,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:13:49,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:13:49,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:13:49,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:13:50,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:13:50,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:13:50,002 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:13:50,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-22 05:13:50,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14f83dc9/89e303a5d323459a948faa3e98ec6f79/FLAG20bc728fc [2020-08-22 05:13:50,564 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:13:50,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-22 05:13:50,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14f83dc9/89e303a5d323459a948faa3e98ec6f79/FLAG20bc728fc [2020-08-22 05:13:50,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14f83dc9/89e303a5d323459a948faa3e98ec6f79 [2020-08-22 05:13:50,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:13:50,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:13:50,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:13:50,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:13:50,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:13:50,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:13:50" (1/1) ... [2020-08-22 05:13:50,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3038f3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:50, skipping insertion in model container [2020-08-22 05:13:50,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:13:50" (1/1) ... [2020-08-22 05:13:50,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:13:50,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:13:51,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:13:51,354 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:13:51,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:13:51,478 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:13:51,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51 WrapperNode [2020-08-22 05:13:51,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:13:51,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:13:51,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:13:51,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:13:51,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (1/1) ... [2020-08-22 05:13:51,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (1/1) ... [2020-08-22 05:13:51,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (1/1) ... [2020-08-22 05:13:51,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (1/1) ... [2020-08-22 05:13:51,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (1/1) ... [2020-08-22 05:13:51,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (1/1) ... [2020-08-22 05:13:51,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (1/1) ... [2020-08-22 05:13:51,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:13:51,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:13:51,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:13:51,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:13:51,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:13:51,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:13:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:13:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:13:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:13:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:13:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:13:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:13:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:13:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:13:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:13:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:13:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:13:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:13:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:13:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:13:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:13:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:13:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:13:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:13:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:13:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:13:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:13:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:13:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:13:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:13:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:13:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:13:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:13:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:13:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:13:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:13:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:13:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:13:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 05:13:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:13:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:13:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:13:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:13:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:13:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:13:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:13:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:13:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:13:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:13:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:13:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:13:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:13:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:13:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:13:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:13:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:13:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:13:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:13:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:13:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:13:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:13:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:13:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:13:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:13:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:13:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:13:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:13:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:13:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:13:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:13:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:13:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:13:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:13:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:13:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:13:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:13:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:13:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:13:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:13:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:13:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:13:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:13:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:13:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:13:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:13:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:13:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 05:13:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:13:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:13:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:13:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:13:51,650 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:13:51,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:13:51,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:13:51,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:13:52,860 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:13:52,861 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:13:52,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:13:52 BoogieIcfgContainer [2020-08-22 05:13:52,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:13:52,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:13:52,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:13:52,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:13:52,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:13:50" (1/3) ... [2020-08-22 05:13:52,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386af55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:13:52, skipping insertion in model container [2020-08-22 05:13:52,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:51" (2/3) ... [2020-08-22 05:13:52,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386af55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:13:52, skipping insertion in model container [2020-08-22 05:13:52,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:13:52" (3/3) ... [2020-08-22 05:13:52,879 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-22 05:13:52,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:13:52,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:13:52,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:13:52,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:13:52,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:13:52,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:13:52,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:13:52,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:13:52,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:13:52,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:13:52,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:13:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-22 05:13:52,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:13:52,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:13:52,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:13:52,965 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:13:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:13:52,971 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-22 05:13:52,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:13:52,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854218833] [2020-08-22 05:13:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:13:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:53,609 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:13:53,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:13:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:13:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:13:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:53,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:13:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:13:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:53,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:13:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:13:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:13:53,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854218833] [2020-08-22 05:13:53,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:13:53,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:13:53,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125489837] [2020-08-22 05:13:53,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:13:53,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:13:53,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:13:53,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:13:53,714 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-22 05:13:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:13:54,742 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-22 05:13:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:13:54,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:13:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:13:54,759 INFO L225 Difference]: With dead ends: 258 [2020-08-22 05:13:54,759 INFO L226 Difference]: Without dead ends: 140 [2020-08-22 05:13:54,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:13:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-22 05:13:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-22 05:13:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-22 05:13:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-22 05:13:54,847 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-22 05:13:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:13:54,848 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-22 05:13:54,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:13:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-22 05:13:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:13:54,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:13:54,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:13:54,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:13:54,853 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:13:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:13:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-22 05:13:54,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:13:54,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099035012] [2020-08-22 05:13:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:13:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:55,196 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:13:55,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:13:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:13:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:55,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:13:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:13:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:55,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:13:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:55,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:13:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:55,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:13:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:13:55,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099035012] [2020-08-22 05:13:55,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:13:55,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:13:55,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203367856] [2020-08-22 05:13:55,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:13:55,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:13:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:13:55,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:13:55,246 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-22 05:13:55,698 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:13:56,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:13:56,324 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-22 05:13:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:13:56,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:13:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:13:56,327 INFO L225 Difference]: With dead ends: 187 [2020-08-22 05:13:56,328 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 05:13:56,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:13:56,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 05:13:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 05:13:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 05:13:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-22 05:13:56,360 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-22 05:13:56,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:13:56,360 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-22 05:13:56,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:13:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-22 05:13:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:13:56,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:13:56,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:13:56,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:13:56,363 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:13:56,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:13:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-22 05:13:56,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:13:56,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215657420] [2020-08-22 05:13:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:13:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:56,688 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:13:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:13:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:13:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:56,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:13:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:13:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:13:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:13:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:13:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:13:56,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215657420] [2020-08-22 05:13:56,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:13:56,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:13:56,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346011004] [2020-08-22 05:13:56,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:13:56,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:13:56,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:13:56,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:13:56,779 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-22 05:13:57,154 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:13:57,458 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:13:57,698 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:13:57,926 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:13:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:13:58,803 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-22 05:13:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:13:58,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 05:13:58,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:13:58,806 INFO L225 Difference]: With dead ends: 200 [2020-08-22 05:13:58,806 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 05:13:58,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:13:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 05:13:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 05:13:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 05:13:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-22 05:13:58,837 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-22 05:13:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:13:58,837 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-22 05:13:58,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:13:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-22 05:13:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 05:13:58,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:13:58,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:13:58,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:13:58,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:13:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:13:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-22 05:13:58,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:13:58,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858228902] [2020-08-22 05:13:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:13:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,121 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:13:59,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:13:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:13:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:13:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:13:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:13:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:13:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:13:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 05:13:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 05:13:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:13:59,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858228902] [2020-08-22 05:13:59,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:13:59,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:13:59,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254324141] [2020-08-22 05:13:59,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:13:59,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:13:59,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:13:59,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:13:59,197 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-22 05:13:59,501 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:00,573 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:01,003 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-22 05:14:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:14:01,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-22 05:14:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:01,010 INFO L225 Difference]: With dead ends: 288 [2020-08-22 05:14:01,010 INFO L226 Difference]: Without dead ends: 212 [2020-08-22 05:14:01,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:14:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-22 05:14:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-22 05:14:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-22 05:14:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-22 05:14:01,055 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-22 05:14:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:01,055 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-22 05:14:01,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:14:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-22 05:14:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 05:14:01,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:01,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:01,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:14:01,058 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:01,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-22 05:14:01,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:01,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113581604] [2020-08-22 05:14:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,342 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:14:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 05:14:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:14:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:01,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113581604] [2020-08-22 05:14:01,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:01,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:14:01,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646451614] [2020-08-22 05:14:01,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:14:01,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:01,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:14:01,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:14:01,425 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-22 05:14:01,773 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:02,751 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:03,043 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:03,267 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:03,489 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:03,758 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:04,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:04,382 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-22 05:14:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:14:04,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-22 05:14:04,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:04,389 INFO L225 Difference]: With dead ends: 505 [2020-08-22 05:14:04,389 INFO L226 Difference]: Without dead ends: 360 [2020-08-22 05:14:04,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:14:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-22 05:14:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-22 05:14:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-22 05:14:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-22 05:14:04,458 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-22 05:14:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:04,459 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-22 05:14:04,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:14:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-22 05:14:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 05:14:04,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:04,461 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] [2020-08-22 05:14:04,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:14:04,462 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:04,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:04,462 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-22 05:14:04,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:04,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316855954] [2020-08-22 05:14:04,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,746 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:14:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 05:14:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 05:14:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:04,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316855954] [2020-08-22 05:14:04,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:04,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:14:04,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993253501] [2020-08-22 05:14:04,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:14:04,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:04,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:14:04,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:14:04,882 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-22 05:14:05,255 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:06,261 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:06,482 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:06,727 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:06,962 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:07,200 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:07,793 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-22 05:14:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:14:07,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-22 05:14:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:07,799 INFO L225 Difference]: With dead ends: 402 [2020-08-22 05:14:07,799 INFO L226 Difference]: Without dead ends: 399 [2020-08-22 05:14:07,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:14:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-22 05:14:07,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-22 05:14:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-22 05:14:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-22 05:14:07,866 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-22 05:14:07,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:07,867 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-22 05:14:07,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:14:07,867 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-22 05:14:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 05:14:07,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:07,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:07,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:14:07,869 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:07,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:07,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-22 05:14:07,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:07,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164280912] [2020-08-22 05:14:07,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,153 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:08,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:14:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:14:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:14:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:08,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164280912] [2020-08-22 05:14:08,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:08,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:14:08,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241797433] [2020-08-22 05:14:08,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:14:08,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:08,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:14:08,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:14:08,330 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-22 05:14:09,338 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:09,576 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:14:09,834 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:10,054 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:10,838 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-22 05:14:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:14:10,839 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-22 05:14:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:10,845 INFO L225 Difference]: With dead ends: 672 [2020-08-22 05:14:10,845 INFO L226 Difference]: Without dead ends: 403 [2020-08-22 05:14:10,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:14:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-22 05:14:10,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-22 05:14:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-22 05:14:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-22 05:14:10,896 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-22 05:14:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:10,897 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-22 05:14:10,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:14:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-22 05:14:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 05:14:10,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:10,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:10,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:14:10,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:10,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-22 05:14:10,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:10,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813486331] [2020-08-22 05:14:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,151 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:14:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:14:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:14:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:11,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813486331] [2020-08-22 05:14:11,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:11,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 05:14:11,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184463623] [2020-08-22 05:14:11,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:14:11,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:11,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:14:11,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:14:11,298 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-22 05:14:12,028 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:12,270 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:12,495 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:13,114 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:13,365 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:13,603 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:14,490 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-22 05:14:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:14:14,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-22 05:14:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:14,494 INFO L225 Difference]: With dead ends: 696 [2020-08-22 05:14:14,494 INFO L226 Difference]: Without dead ends: 417 [2020-08-22 05:14:14,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:14:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-22 05:14:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-22 05:14:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-22 05:14:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-22 05:14:14,559 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-22 05:14:14,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:14,559 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-22 05:14:14,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:14:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-22 05:14:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 05:14:14,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:14,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:14,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:14:14,561 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-22 05:14:14,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:14,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175129987] [2020-08-22 05:14:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,810 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:14,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:14:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:14:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:14:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:14,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175129987] [2020-08-22 05:14:14,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:14,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:14:14,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665477578] [2020-08-22 05:14:14,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:14:14,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:14,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:14:14,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:14:14,930 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-22 05:14:15,272 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:15,774 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:17,500 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-22 05:14:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:14:17,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-22 05:14:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:17,507 INFO L225 Difference]: With dead ends: 1018 [2020-08-22 05:14:17,507 INFO L226 Difference]: Without dead ends: 731 [2020-08-22 05:14:17,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:14:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-22 05:14:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-22 05:14:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-22 05:14:17,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-22 05:14:17,653 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-22 05:14:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:17,654 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-22 05:14:17,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:14:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-22 05:14:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 05:14:17,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:17,656 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] [2020-08-22 05:14:17,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:14:17,656 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:17,660 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-22 05:14:17,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:17,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174026936] [2020-08-22 05:14:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:14:17,721 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:14:17,721 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:14:17,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:14:17,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:14:17 BoogieIcfgContainer [2020-08-22 05:14:17,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:14:17,750 INFO L168 Benchmark]: Toolchain (without parser) took 26893.05 ms. Allocated memory was 139.5 MB in the beginning and 626.0 MB in the end (delta: 486.5 MB). Free memory was 101.1 MB in the beginning and 531.9 MB in the end (delta: -430.9 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:17,751 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 05:14:17,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.29 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 172.4 MB in the end (delta: -71.6 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:17,753 INFO L168 Benchmark]: Boogie Preprocessor took 87.86 ms. Allocated memory is still 202.4 MB. Free memory was 172.4 MB in the beginning and 168.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:17,753 INFO L168 Benchmark]: RCFGBuilder took 1298.13 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 168.3 MB in the beginning and 200.4 MB in the end (delta: -32.1 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:17,754 INFO L168 Benchmark]: TraceAbstraction took 24876.65 ms. Allocated memory was 235.4 MB in the beginning and 626.0 MB in the end (delta: 390.6 MB). Free memory was 199.0 MB in the beginning and 531.9 MB in the end (delta: -332.9 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:17,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 612.29 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 172.4 MB in the end (delta: -71.6 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.86 ms. Allocated memory is still 202.4 MB. Free memory was 172.4 MB in the beginning and 168.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1298.13 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 168.3 MB in the beginning and 200.4 MB in the end (delta: -32.1 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24876.65 ms. Allocated memory was 235.4 MB in the beginning and 626.0 MB in the end (delta: 390.6 MB). Free memory was 199.0 MB in the beginning and 531.9 MB in the end (delta: -332.9 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 897 SDtfs, 1722 SDslu, 873 SDs, 0 SdLazy, 4198 SolverSat, 1160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...