/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:08:54,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:08:54,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:08:54,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:08:54,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:08:54,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:08:54,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:08:54,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:08:54,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:08:54,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:08:54,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:08:54,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:08:54,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:08:54,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:08:54,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:08:54,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:08:54,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:08:54,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:08:54,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:08:54,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:08:54,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:08:54,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:08:54,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:08:54,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:08:54,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:08:54,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:08:54,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:08:54,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:08:54,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:08:54,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:08:54,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:08:54,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:08:54,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:08:54,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:08:54,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:08:54,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:08:54,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:08:54,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:08:54,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:08:54,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:08:54,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:08:54,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:08:54,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:08:54,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:08:54,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:08:54,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:08:54,407 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:08:54,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:08:54,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:08:54,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:08:54,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:08:54,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:08:54,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:08:54,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:08:54,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:08:54,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:08:54,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:08:54,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:08:54,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:08:54,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:08:54,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:08:54,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:08:54,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:08:54,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:08:54,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:08:54,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:08:54,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:08:54,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:08:54,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:08:54,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:08:54,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:08:54,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:08:54,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:08:54,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:08:54,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:08:54,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:08:54,791 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:08:54,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-18 16:08:54,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888617b49/b0f17a6c616c4cfdbf17269b753fb3a9/FLAG0ff4af455 [2020-08-18 16:08:55,364 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:08:55,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-18 16:08:55,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888617b49/b0f17a6c616c4cfdbf17269b753fb3a9/FLAG0ff4af455 [2020-08-18 16:08:55,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888617b49/b0f17a6c616c4cfdbf17269b753fb3a9 [2020-08-18 16:08:55,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:08:55,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:08:55,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:08:55,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:08:55,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:08:55,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:08:55" (1/1) ... [2020-08-18 16:08:55,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:55, skipping insertion in model container [2020-08-18 16:08:55,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:08:55" (1/1) ... [2020-08-18 16:08:55,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:08:55,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:08:56,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:08:56,296 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:08:56,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:08:56,408 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:08:56,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56 WrapperNode [2020-08-18 16:08:56,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:08:56,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:08:56,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:08:56,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:08:56,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (1/1) ... [2020-08-18 16:08:56,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (1/1) ... [2020-08-18 16:08:56,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (1/1) ... [2020-08-18 16:08:56,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (1/1) ... [2020-08-18 16:08:56,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (1/1) ... [2020-08-18 16:08:56,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (1/1) ... [2020-08-18 16:08:56,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (1/1) ... [2020-08-18 16:08:56,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:08:56,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:08:56,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:08:56,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:08:56,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:08:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:08:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:08:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:08:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:08:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:08:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:08:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:08:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:08:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:08:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:08:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:08:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:08:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:08:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:08:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:08:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:08:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:08:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:08:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:08:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:08:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:08:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:08:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:08:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:08:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:08:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:08:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:08:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:08:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:08:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:08:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:08:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:08:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:08:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:08:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:08:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:08:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:08:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:08:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:08:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:08:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:08:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:08:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:08:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:08:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:08:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:08:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:08:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:08:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:08:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:08:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:08:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:08:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:08:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:08:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:08:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:08:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:08:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:08:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:08:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:08:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:08:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:08:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:08:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:08:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:08:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:08:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:08:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:08:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:08:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:08:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:08:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:08:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:08:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:08:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:08:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:08:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:08:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:08:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:08:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:08:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:08:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:08:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:08:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:08:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:08:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:08:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:08:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:08:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:08:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:08:57,629 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:08:57,629 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:08:57,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:08:57 BoogieIcfgContainer [2020-08-18 16:08:57,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:08:57,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:08:57,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:08:57,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:08:57,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:08:55" (1/3) ... [2020-08-18 16:08:57,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c09a29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:08:57, skipping insertion in model container [2020-08-18 16:08:57,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:56" (2/3) ... [2020-08-18 16:08:57,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c09a29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:08:57, skipping insertion in model container [2020-08-18 16:08:57,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:08:57" (3/3) ... [2020-08-18 16:08:57,643 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-08-18 16:08:57,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:08:57,662 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:08:57,676 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:08:57,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:08:57,702 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:08:57,702 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:08:57,702 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:08:57,703 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:08:57,703 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:08:57,703 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:08:57,703 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:08:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-08-18 16:08:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:08:57,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:57,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:08:57,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:57,747 INFO L82 PathProgramCache]: Analyzing trace with hash -219528545, now seen corresponding path program 1 times [2020-08-18 16:08:57,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:57,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59002001] [2020-08-18 16:08:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,463 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:08:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:08:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:58,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59002001] [2020-08-18 16:08:58,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:58,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:08:58,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482409350] [2020-08-18 16:08:58,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:08:58,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:58,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:08:58,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:08:58,565 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-08-18 16:08:59,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:59,727 INFO L93 Difference]: Finished difference Result 281 states and 365 transitions. [2020-08-18 16:08:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:08:59,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:08:59,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:59,743 INFO L225 Difference]: With dead ends: 281 [2020-08-18 16:08:59,743 INFO L226 Difference]: Without dead ends: 152 [2020-08-18 16:08:59,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:08:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-18 16:08:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-08-18 16:08:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 16:08:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-18 16:08:59,833 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 46 [2020-08-18 16:08:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:59,834 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-18 16:08:59,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:08:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-18 16:08:59,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:08:59,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:59,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:08:59,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:08:59,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:59,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:59,839 INFO L82 PathProgramCache]: Analyzing trace with hash 207659306, now seen corresponding path program 1 times [2020-08-18 16:08:59,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:59,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736986504] [2020-08-18 16:08:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:00,235 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:00,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:00,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:09:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:09:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:00,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736986504] [2020-08-18 16:09:00,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:00,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:09:00,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891833619] [2020-08-18 16:09:00,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:09:00,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:00,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:09:00,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:09:00,346 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 4 states. [2020-08-18 16:09:00,787 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:01,600 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2020-08-18 16:09:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:09:01,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:09:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:01,610 INFO L225 Difference]: With dead ends: 214 [2020-08-18 16:09:01,610 INFO L226 Difference]: Without dead ends: 136 [2020-08-18 16:09:01,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:09:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-18 16:09:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-18 16:09:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 16:09:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-08-18 16:09:01,647 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 47 [2020-08-18 16:09:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:01,648 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-08-18 16:09:01,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:09:01,648 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-08-18 16:09:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:09:01,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:01,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:01,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:09:01,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:01,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:01,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1269439858, now seen corresponding path program 1 times [2020-08-18 16:09:01,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:01,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593855773] [2020-08-18 16:09:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:01,980 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:02,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:09:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:09:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:02,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593855773] [2020-08-18 16:09:02,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:02,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:09:02,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120285715] [2020-08-18 16:09:02,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:09:02,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:02,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:09:02,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:09:02,074 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 8 states. [2020-08-18 16:09:02,476 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:02,813 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:03,107 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:03,418 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:04,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:04,565 INFO L93 Difference]: Finished difference Result 223 states and 270 transitions. [2020-08-18 16:09:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:09:04,569 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 16:09:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:04,571 INFO L225 Difference]: With dead ends: 223 [2020-08-18 16:09:04,571 INFO L226 Difference]: Without dead ends: 136 [2020-08-18 16:09:04,572 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 [2020-08-18 16:09:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-18 16:09:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-18 16:09:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 16:09:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-08-18 16:09:04,603 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 51 [2020-08-18 16:09:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:04,604 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-08-18 16:09:04,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:09:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-08-18 16:09:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:09:04,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:04,606 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] [2020-08-18 16:09:04,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:09:04,607 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash 6417079, now seen corresponding path program 1 times [2020-08-18 16:09:04,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:04,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443380066] [2020-08-18 16:09:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,879 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:04,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:09:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:09:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:09:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:04,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443380066] [2020-08-18 16:09:04,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:04,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:09:04,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470365767] [2020-08-18 16:09:04,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:09:04,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:04,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:09:04,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:09:04,987 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-08-18 16:09:05,321 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:06,585 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:07,065 INFO L93 Difference]: Finished difference Result 306 states and 374 transitions. [2020-08-18 16:09:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:09:07,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 16:09:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:07,071 INFO L225 Difference]: With dead ends: 306 [2020-08-18 16:09:07,071 INFO L226 Difference]: Without dead ends: 219 [2020-08-18 16:09:07,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:09:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-08-18 16:09:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2020-08-18 16:09:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-08-18 16:09:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2020-08-18 16:09:07,114 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 59 [2020-08-18 16:09:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:07,114 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2020-08-18 16:09:07,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:09:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2020-08-18 16:09:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 16:09:07,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:07,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:07,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:09:07,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:07,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1711068188, now seen corresponding path program 1 times [2020-08-18 16:09:07,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:07,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585387750] [2020-08-18 16:09:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,459 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:09:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 16:09:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 16:09:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:07,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585387750] [2020-08-18 16:09:07,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:07,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:09:07,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137937473] [2020-08-18 16:09:07,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:09:07,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:07,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:09:07,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:09:07,629 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand 10 states. [2020-08-18 16:09:08,265 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:08,555 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:08,839 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:09,444 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:09,718 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:09,982 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:10,829 INFO L93 Difference]: Finished difference Result 374 states and 456 transitions. [2020-08-18 16:09:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:09:10,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-08-18 16:09:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:10,832 INFO L225 Difference]: With dead ends: 374 [2020-08-18 16:09:10,833 INFO L226 Difference]: Without dead ends: 220 [2020-08-18 16:09:10,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:09:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-18 16:09:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2020-08-18 16:09:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 16:09:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-08-18 16:09:10,872 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 73 [2020-08-18 16:09:10,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:10,872 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-08-18 16:09:10,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:09:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-08-18 16:09:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 16:09:10,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:10,874 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] [2020-08-18 16:09:10,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:09:10,875 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:10,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:10,875 INFO L82 PathProgramCache]: Analyzing trace with hash -212159846, now seen corresponding path program 1 times [2020-08-18 16:09:10,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:10,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689941810] [2020-08-18 16:09:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,230 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:11,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:09:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 16:09:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 16:09:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:11,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689941810] [2020-08-18 16:09:11,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:11,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:09:11,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817905194] [2020-08-18 16:09:11,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:11,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:11,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:11,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:11,400 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 12 states. [2020-08-18 16:09:11,847 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:12,211 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:12,491 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:12,761 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:13,300 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:14,150 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:14,465 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:14,779 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:15,060 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:15,452 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:15,781 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:17,010 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:17,357 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:17,989 INFO L93 Difference]: Finished difference Result 644 states and 828 transitions. [2020-08-18 16:09:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:09:17,990 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-18 16:09:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:17,995 INFO L225 Difference]: With dead ends: 644 [2020-08-18 16:09:17,995 INFO L226 Difference]: Without dead ends: 486 [2020-08-18 16:09:17,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:09:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-18 16:09:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 428. [2020-08-18 16:09:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-08-18 16:09:18,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 499 transitions. [2020-08-18 16:09:18,110 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 499 transitions. Word has length 73 [2020-08-18 16:09:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:18,113 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 499 transitions. [2020-08-18 16:09:18,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 499 transitions. [2020-08-18 16:09:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 16:09:18,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:18,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:18,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:09:18,127 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1943233311, now seen corresponding path program 1 times [2020-08-18 16:09:18,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:18,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011913477] [2020-08-18 16:09:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,470 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:09:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:09:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 16:09:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 16:09:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 16:09:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 16:09:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 16:09:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 16:09:18,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011913477] [2020-08-18 16:09:18,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:18,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:09:18,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915266730] [2020-08-18 16:09:18,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:09:18,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:18,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:09:18,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:09:18,691 INFO L87 Difference]: Start difference. First operand 428 states and 499 transitions. Second operand 13 states. [2020-08-18 16:09:19,149 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:19,817 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:20,329 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:20,610 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:09:20,943 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:21,235 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:21,513 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:21,809 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:09:22,117 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:22,380 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:23,800 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:24,071 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:09:24,345 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:24,604 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:25,064 INFO L93 Difference]: Finished difference Result 767 states and 973 transitions. [2020-08-18 16:09:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 16:09:25,065 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-18 16:09:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:25,069 INFO L225 Difference]: With dead ends: 767 [2020-08-18 16:09:25,069 INFO L226 Difference]: Without dead ends: 363 [2020-08-18 16:09:25,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 16:09:25,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-18 16:09:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2020-08-18 16:09:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-18 16:09:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2020-08-18 16:09:25,129 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 132 [2020-08-18 16:09:25,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:25,130 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2020-08-18 16:09:25,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:09:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2020-08-18 16:09:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 16:09:25,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:25,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:25,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:09:25,132 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1980525114, now seen corresponding path program 1 times [2020-08-18 16:09:25,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:25,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273267407] [2020-08-18 16:09:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,448 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:09:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:09:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:09:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:09:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:09:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 16:09:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:09:25,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273267407] [2020-08-18 16:09:25,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:25,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:09:25,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139712332] [2020-08-18 16:09:25,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:25,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:25,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:25,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:25,645 INFO L87 Difference]: Start difference. First operand 313 states and 368 transitions. Second operand 12 states. [2020-08-18 16:09:26,049 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:26,646 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:27,391 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:27,681 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:27,963 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:28,222 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:28,531 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:28,807 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:29,699 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:30,403 INFO L93 Difference]: Finished difference Result 727 states and 931 transitions. [2020-08-18 16:09:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:09:30,403 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 16:09:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:30,408 INFO L225 Difference]: With dead ends: 727 [2020-08-18 16:09:30,409 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 16:09:30,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:09:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 16:09:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 411. [2020-08-18 16:09:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-08-18 16:09:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 492 transitions. [2020-08-18 16:09:30,481 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 492 transitions. Word has length 128 [2020-08-18 16:09:30,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:30,481 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 492 transitions. [2020-08-18 16:09:30,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 492 transitions. [2020-08-18 16:09:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-18 16:09:30,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:30,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:30,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:09:30,485 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:30,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:30,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2141115904, now seen corresponding path program 2 times [2020-08-18 16:09:30,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:30,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649012893] [2020-08-18 16:09:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:09:30,552 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:09:30,553 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:09:30,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:09:30,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:09:30 BoogieIcfgContainer [2020-08-18 16:09:30,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:09:30,588 INFO L168 Benchmark]: Toolchain (without parser) took 34879.22 ms. Allocated memory was 143.7 MB in the beginning and 598.2 MB in the end (delta: 454.6 MB). Free memory was 101.0 MB in the beginning and 250.0 MB in the end (delta: -148.9 MB). Peak memory consumption was 305.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:30,589 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:09:30,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.91 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 100.8 MB in the beginning and 172.1 MB in the end (delta: -71.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:30,590 INFO L168 Benchmark]: Boogie Preprocessor took 88.84 ms. Allocated memory is still 202.9 MB. Free memory was 172.1 MB in the beginning and 167.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:30,591 INFO L168 Benchmark]: RCFGBuilder took 1136.19 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 167.9 MB in the beginning and 199.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:30,592 INFO L168 Benchmark]: TraceAbstraction took 32950.27 ms. Allocated memory was 234.9 MB in the beginning and 598.2 MB in the end (delta: 363.3 MB). Free memory was 199.8 MB in the beginning and 250.0 MB in the end (delta: -50.1 MB). Peak memory consumption was 313.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:30,595 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.91 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 100.8 MB in the beginning and 172.1 MB in the end (delta: -71.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.84 ms. Allocated memory is still 202.9 MB. Free memory was 172.1 MB in the beginning and 167.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1136.19 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 167.9 MB in the beginning and 199.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32950.27 ms. Allocated memory was 234.9 MB in the beginning and 598.2 MB in the end (delta: 363.3 MB). Free memory was 199.8 MB in the beginning and 250.0 MB in the end (delta: -50.1 MB). Peak memory consumption was 313.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 211]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L385] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L198] int retValue_acc ; [L201] retValue_acc = 1 [L202] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L585] int splverifierCounter ; [L586] int tmp ; [L587] int tmp___0 ; [L588] int tmp___1 ; [L589] int tmp___2 ; [L592] splverifierCounter = 0 [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND TRUE \read(tmp) [L606] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L606] RET waterRise() [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L803] int retValue_acc ; [L804] int tmp ; [L805] int tmp___0 ; [L809] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L809] RET, EXPR isHighWaterSensorDry() [L809] tmp = isHighWaterSensorDry() [L811] COND FALSE !(\read(tmp)) [L814] tmp___0 = 1 [L816] retValue_acc = tmp___0 [L817] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L722] int tmp ; [L726] CALL, EXPR isMethaneAlarm() [L747] int retValue_acc ; [L751] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L751] RET, EXPR isMethaneLevelCritical() [L751] retValue_acc = isMethaneLevelCritical() [L753] return (retValue_acc); [L726] RET, EXPR isMethaneAlarm() [L726] tmp = isMethaneAlarm() [L728] COND FALSE !(\read(tmp)) [L732] CALL activatePump__wrappee__highWaterSensor() [L716] pumpRunning = 1 [L732] RET activatePump__wrappee__highWaterSensor() [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND TRUE tmp == 0 [L153] CALL, EXPR isPumpRunning() [L758] int retValue_acc ; [L761] retValue_acc = pumpRunning [L762] return (retValue_acc); [L153] RET, EXPR isPumpRunning() [L153] tmp___0 = isPumpRunning() [L155] COND TRUE \read(tmp___0) [L157] CALL __automaton_fail() [L211] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 27.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 901 SDtfs, 1922 SDslu, 1109 SDs, 0 SdLazy, 5426 SolverSat, 1224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=6, 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, 350 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 772 NumberOfCodeBlocks, 772 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 204026 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 44/52 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...