/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:41:08,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:41:08,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:41:08,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:41:08,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:41:08,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:41:08,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:41:08,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:41:08,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:41:08,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:41:08,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:41:08,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:41:08,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:41:08,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:41:08,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:41:08,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:41:08,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:41:08,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:41:08,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:41:08,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:41:08,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:41:08,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:41:08,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:41:08,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:41:08,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:41:08,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:41:08,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:41:08,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:41:08,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:41:08,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:41:08,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:41:08,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:41:08,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:41:08,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:41:08,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:41:08,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:41:08,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:41:08,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:41:08,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:41:08,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:41:08,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:41:08,489 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 [2020-08-27 21:41:08,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:41:08,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:41:08,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:41:08,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:41:08,557 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:41:08,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:41:08,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:41:08,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:41:08,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:41:08,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:41:08,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:41:08,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:41:08,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:41:08,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:41:08,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:41:08,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:41:08,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:41:08,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:41:08,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:41:08,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:41:08,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:41:08,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:41:08,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:41:08,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:41:08,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:41:08,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:41:08,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:41:08,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:41:08,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:41:08,563 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 -> false [2020-08-27 21:41:09,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:41:09,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:41:09,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:41:09,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:41:09,039 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:41:09,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-27 21:41:09,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4021a376e/854224d072ef4f9cabe242cf7301c1ef/FLAG7c72c62ce [2020-08-27 21:41:09,654 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:41:09,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-27 21:41:09,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4021a376e/854224d072ef4f9cabe242cf7301c1ef/FLAG7c72c62ce [2020-08-27 21:41:10,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4021a376e/854224d072ef4f9cabe242cf7301c1ef [2020-08-27 21:41:10,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:41:10,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:41:10,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:41:10,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:41:10,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:41:10,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115854be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10, skipping insertion in model container [2020-08-27 21:41:10,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:41:10,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:41:10,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:41:10,649 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:41:10,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:41:10,758 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:41:10,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10 WrapperNode [2020-08-27 21:41:10,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:41:10,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:41:10,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:41:10,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:41:10,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (1/1) ... [2020-08-27 21:41:10,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:41:10,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:41:10,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:41:10,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:41:10,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (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 [2020-08-27 21:41:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:41:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:41:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:41:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:41:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:41:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:41:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:41:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:41:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:41:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:41:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:41:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:41:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:41:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:41:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:41:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:41:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:41:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:41:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:41:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:41:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:41:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:41:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:41:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:41:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:41:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:41:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:41:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:41:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:41:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:41:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:41:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:41:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:41:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:41:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:41:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:41:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:41:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:41:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:41:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:41:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:41:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:41:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:41:11,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:41:11,975 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:41:11,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:41:11 BoogieIcfgContainer [2020-08-27 21:41:11,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:41:11,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:41:11,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:41:11,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:41:11,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:41:10" (1/3) ... [2020-08-27 21:41:11,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3345cf72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:41:11, skipping insertion in model container [2020-08-27 21:41:11,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:10" (2/3) ... [2020-08-27 21:41:11,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3345cf72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:41:11, skipping insertion in model container [2020-08-27 21:41:11,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:41:11" (3/3) ... [2020-08-27 21:41:11,990 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-27 21:41:12,001 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:41:12,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:41:12,035 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:41:12,070 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:41:12,070 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:41:12,070 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:41:12,070 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:41:12,071 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:41:12,071 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:41:12,071 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:41:12,071 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:41:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-27 21:41:12,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-27 21:41:12,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:12,114 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] [2020-08-27 21:41:12,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:12,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:12,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1120421974, now seen corresponding path program 1 times [2020-08-27 21:41:12,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:12,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857966220] [2020-08-27 21:41:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:12,927 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:41:12,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:41:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:41:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:41:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:41:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:41:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:41:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:41:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:41:13,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857966220] [2020-08-27 21:41:13,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:41:13,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:41:13,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582772032] [2020-08-27 21:41:13,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:41:13,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:41:13,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:41:13,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:41:13,112 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-27 21:41:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:41:14,145 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-27 21:41:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:41:14,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-27 21:41:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:41:14,163 INFO L225 Difference]: With dead ends: 249 [2020-08-27 21:41:14,164 INFO L226 Difference]: Without dead ends: 135 [2020-08-27 21:41:14,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:41:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-27 21:41:14,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-27 21:41:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-27 21:41:14,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-27 21:41:14,268 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-27 21:41:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:41:14,268 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-27 21:41:14,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:41:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-27 21:41:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-27 21:41:14,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:14,273 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] [2020-08-27 21:41:14,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:41:14,273 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:14,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:14,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1195015831, now seen corresponding path program 1 times [2020-08-27 21:41:14,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:14,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232011800] [2020-08-27 21:41:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:14,676 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:41:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:41:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:14,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:41:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:14,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:41:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:14,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:41:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:14,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:41:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:41:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:41:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:41:14,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232011800] [2020-08-27 21:41:14,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:41:14,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:41:14,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200551503] [2020-08-27 21:41:14,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:41:14,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:41:14,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:41:14,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:41:14,806 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-27 21:41:15,235 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:41:15,864 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-27 21:41:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:41:15,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-27 21:41:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:41:15,867 INFO L225 Difference]: With dead ends: 182 [2020-08-27 21:41:15,868 INFO L226 Difference]: Without dead ends: 119 [2020-08-27 21:41:15,869 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 [2020-08-27 21:41:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-27 21:41:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-27 21:41:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-27 21:41:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-27 21:41:15,904 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-27 21:41:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:41:15,904 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-27 21:41:15,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:41:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-27 21:41:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:41:15,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:15,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:41:15,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:41:15,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -234309885, now seen corresponding path program 1 times [2020-08-27 21:41:15,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:15,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988397435] [2020-08-27 21:41:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:16,250 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:41:16,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:41:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:16,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:41:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:16,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:41:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:16,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:41:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:41:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:41:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:41:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:41:16,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988397435] [2020-08-27 21:41:16,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:41:16,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:41:16,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007112160] [2020-08-27 21:41:16,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:41:16,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:41:16,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:41:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:41:16,371 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-27 21:41:16,812 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:41:17,143 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:17,426 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:17,671 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:41:18,636 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-27 21:41:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:41:18,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-27 21:41:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:41:18,640 INFO L225 Difference]: With dead ends: 191 [2020-08-27 21:41:18,640 INFO L226 Difference]: Without dead ends: 119 [2020-08-27 21:41:18,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:41:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-27 21:41:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-27 21:41:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-27 21:41:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-27 21:41:18,672 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-27 21:41:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:41:18,673 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-27 21:41:18,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:41:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-27 21:41:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-27 21:41:18,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:18,675 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] [2020-08-27 21:41:18,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:41:18,676 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:18,676 INFO L82 PathProgramCache]: Analyzing trace with hash -962632878, now seen corresponding path program 1 times [2020-08-27 21:41:18,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:18,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643060869] [2020-08-27 21:41:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,020 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:41:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:41:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:41:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:41:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:41:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:41:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:41:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:41:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:41:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:41:19,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643060869] [2020-08-27 21:41:19,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:41:19,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:41:19,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662741911] [2020-08-27 21:41:19,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:41:19,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:41:19,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:41:19,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:41:19,115 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-27 21:41:19,523 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:41:20,726 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:21,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:41:21,198 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-27 21:41:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:41:21,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-27 21:41:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:41:21,203 INFO L225 Difference]: With dead ends: 274 [2020-08-27 21:41:21,204 INFO L226 Difference]: Without dead ends: 202 [2020-08-27 21:41:21,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:41:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-27 21:41:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-27 21:41:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-27 21:41:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-27 21:41:21,242 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-27 21:41:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:41:21,243 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-27 21:41:21,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:41:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-27 21:41:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-27 21:41:21,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:21,245 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] [2020-08-27 21:41:21,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:41:21,246 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:21,246 INFO L82 PathProgramCache]: Analyzing trace with hash 869233952, now seen corresponding path program 1 times [2020-08-27 21:41:21,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:21,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272087131] [2020-08-27 21:41:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,642 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:41:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:41:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:41:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:41:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:41:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:41:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:41:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:41:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:41:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-27 21:41:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-27 21:41:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:41:21,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272087131] [2020-08-27 21:41:21,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:41:21,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:41:21,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565060064] [2020-08-27 21:41:21,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:41:21,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:41:21,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:41:21,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:41:21,825 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 12 states. [2020-08-27 21:41:22,321 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:41:22,681 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:23,002 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:23,347 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:23,927 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:24,874 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:25,212 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:25,524 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:25,821 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:41:26,152 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:26,452 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:27,482 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:41:27,834 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:41:28,586 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2020-08-27 21:41:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:41:28,586 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-27 21:41:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:41:28,592 INFO L225 Difference]: With dead ends: 568 [2020-08-27 21:41:28,592 INFO L226 Difference]: Without dead ends: 431 [2020-08-27 21:41:28,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-27 21:41:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-08-27 21:41:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 373. [2020-08-27 21:41:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-27 21:41:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 443 transitions. [2020-08-27 21:41:28,673 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 443 transitions. Word has length 73 [2020-08-27 21:41:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:41:28,674 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 443 transitions. [2020-08-27 21:41:28,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:41:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 443 transitions. [2020-08-27 21:41:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-27 21:41:28,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:28,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:41:28,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:41:28,680 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1180420772, now seen corresponding path program 1 times [2020-08-27 21:41:28,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:28,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642343934] [2020-08-27 21:41:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:28,997 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:41:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:41:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:41:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:41:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:41:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:41:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:41:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:41:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:41:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:41:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-27 21:41:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:41:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-27 21:41:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:41:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-27 21:41:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-27 21:41:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-27 21:41:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-27 21:41:29,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642343934] [2020-08-27 21:41:29,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:41:29,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-27 21:41:29,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308738887] [2020-08-27 21:41:29,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:41:29,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:41:29,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:41:29,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:41:29,236 INFO L87 Difference]: Start difference. First operand 373 states and 443 transitions. Second operand 13 states. [2020-08-27 21:41:29,707 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:41:30,400 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:41:30,996 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:31,316 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:41:31,647 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:41:31,952 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:32,243 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:41:32,570 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:41:32,909 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:41:33,242 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:41:34,708 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:35,004 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:41:35,294 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:35,592 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:41:36,136 INFO L93 Difference]: Finished difference Result 778 states and 1000 transitions. [2020-08-27 21:41:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-27 21:41:36,136 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-08-27 21:41:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:41:36,141 INFO L225 Difference]: With dead ends: 778 [2020-08-27 21:41:36,142 INFO L226 Difference]: Without dead ends: 429 [2020-08-27 21:41:36,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-27 21:41:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-27 21:41:36,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 367. [2020-08-27 21:41:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-27 21:41:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 437 transitions. [2020-08-27 21:41:36,216 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 437 transitions. Word has length 117 [2020-08-27 21:41:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:41:36,216 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 437 transitions. [2020-08-27 21:41:36,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:41:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 437 transitions. [2020-08-27 21:41:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-27 21:41:36,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:36,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:41:36,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:41:36,219 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:36,220 INFO L82 PathProgramCache]: Analyzing trace with hash -2066212398, now seen corresponding path program 1 times [2020-08-27 21:41:36,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:36,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695959431] [2020-08-27 21:41:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,509 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:41:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:41:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:41:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:41:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:41:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:41:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:41:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:41:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:41:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-27 21:41:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:41:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:41:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-27 21:41:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-27 21:41:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-27 21:41:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-27 21:41:36,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695959431] [2020-08-27 21:41:36,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:41:36,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:41:36,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510685589] [2020-08-27 21:41:36,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:41:36,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:41:36,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:41:36,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:41:36,704 INFO L87 Difference]: Start difference. First operand 367 states and 437 transitions. Second operand 12 states. [2020-08-27 21:41:37,216 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:37,514 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:37,810 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:38,413 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:38,710 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:39,002 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:41:39,745 INFO L93 Difference]: Finished difference Result 663 states and 818 transitions. [2020-08-27 21:41:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:41:39,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-27 21:41:39,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:41:39,752 INFO L225 Difference]: With dead ends: 663 [2020-08-27 21:41:39,752 INFO L226 Difference]: Without dead ends: 320 [2020-08-27 21:41:39,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:41:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-27 21:41:39,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2020-08-27 21:41:39,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-27 21:41:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2020-08-27 21:41:39,817 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 109 [2020-08-27 21:41:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:41:39,818 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2020-08-27 21:41:39,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:41:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2020-08-27 21:41:39,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-27 21:41:39,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:39,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:41:39,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:41:39,823 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:39,823 INFO L82 PathProgramCache]: Analyzing trace with hash 147640793, now seen corresponding path program 1 times [2020-08-27 21:41:39,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:39,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855117950] [2020-08-27 21:41:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,188 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:41:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:41:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:41:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:41:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:41:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:41:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:41:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:41:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:41:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:41:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-27 21:41:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:41:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-27 21:41:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 21:41:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:41:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-27 21:41:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:41:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:41:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:41:40,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855117950] [2020-08-27 21:41:40,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:41:40,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:41:40,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303030485] [2020-08-27 21:41:40,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:41:40,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:41:40,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:41:40,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:41:40,376 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand 12 states. [2020-08-27 21:41:40,818 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:41:41,751 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:41:42,397 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:41:42,752 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:43,058 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:43,364 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:43,700 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:44,035 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:41:45,208 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:41:45,544 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:41:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:41:46,144 INFO L93 Difference]: Finished difference Result 687 states and 875 transitions. [2020-08-27 21:41:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-27 21:41:46,144 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-27 21:41:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:41:46,148 INFO L225 Difference]: With dead ends: 687 [2020-08-27 21:41:46,148 INFO L226 Difference]: Without dead ends: 469 [2020-08-27 21:41:46,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-27 21:41:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-27 21:41:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2020-08-27 21:41:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-08-27 21:41:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2020-08-27 21:41:46,239 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 113 [2020-08-27 21:41:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:41:46,240 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2020-08-27 21:41:46,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:41:46,240 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2020-08-27 21:41:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-27 21:41:46,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:41:46,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:41:46,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:41:46,247 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:41:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:41:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1088865250, now seen corresponding path program 2 times [2020-08-27 21:41:46,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:41:46,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058168254] [2020-08-27 21:41:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:41:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:41:46,333 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:41:46,333 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:41:46,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:41:46,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:41:46 BoogieIcfgContainer [2020-08-27 21:41:46,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:41:46,398 INFO L168 Benchmark]: Toolchain (without parser) took 36366.00 ms. Allocated memory was 140.5 MB in the beginning and 625.5 MB in the end (delta: 485.0 MB). Free memory was 102.0 MB in the beginning and 164.1 MB in the end (delta: -62.1 MB). Peak memory consumption was 422.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:41:46,403 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-27 21:41:46,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.65 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 170.3 MB in the end (delta: -68.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-27 21:41:46,407 INFO L168 Benchmark]: Boogie Preprocessor took 95.79 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 165.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-27 21:41:46,407 INFO L168 Benchmark]: RCFGBuilder took 1124.80 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 165.6 MB in the beginning and 195.3 MB in the end (delta: -29.7 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-27 21:41:46,411 INFO L168 Benchmark]: TraceAbstraction took 34409.98 ms. Allocated memory was 236.5 MB in the beginning and 625.5 MB in the end (delta: 389.0 MB). Free memory was 195.3 MB in the beginning and 164.1 MB in the end (delta: 31.1 MB). Peak memory consumption was 420.2 MB. Max. memory is 7.1 GB. [2020-08-27 21:41:46,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.65 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 170.3 MB in the end (delta: -68.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.79 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 165.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1124.80 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 165.6 MB in the beginning and 195.3 MB in the end (delta: -29.7 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34409.98 ms. Allocated memory was 236.5 MB in the beginning and 625.5 MB in the end (delta: 389.0 MB). Free memory was 195.3 MB in the beginning and 164.1 MB in the end (delta: 31.1 MB). Peak memory consumption was 420.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.2s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 803 SDtfs, 1767 SDslu, 1080 SDs, 0 SdLazy, 5107 SolverSat, 1154 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 16.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 203130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 66/76 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...