/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:21:31,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:21:31,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:21:31,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:21:31,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:21:31,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:21:31,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:21:31,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:21:31,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:21:31,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:21:31,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:21:31,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:21:31,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:21:31,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:21:31,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:21:31,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:21:31,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:21:31,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:21:31,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:21:31,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:21:31,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:21:31,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:21:31,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:21:31,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:21:31,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:21:31,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:21:31,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:21:31,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:21:31,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:21:31,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:21:31,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:21:31,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:21:31,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:21:31,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:21:31,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:21:31,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:21:31,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:21:31,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:21:31,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:21:31,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:21:31,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:21:31,402 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 10:21:31,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:21:31,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:21:31,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:21:31,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:21:31,452 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:21:31,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:21:31,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:21:31,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:21:31,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:21:31,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:21:31,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:21:31,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:21:31,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:21:31,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:21:31,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:21:31,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:21:31,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:21:31,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:21:31,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:21:31,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:21:31,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:21:31,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:21:31,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:21:31,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:21:31,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:21:31,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:21:31,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:21:31,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:21:31,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:21:31,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:21:31,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:21:31,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:21:31,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:21:31,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:21:31,807 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:21:31,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-08-18 10:21:31,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08e88b2e3/158c7b315ac14d51a5d5ca30cb826bcd/FLAG13a84f45a [2020-08-18 10:21:32,382 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:21:32,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-08-18 10:21:32,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08e88b2e3/158c7b315ac14d51a5d5ca30cb826bcd/FLAG13a84f45a [2020-08-18 10:21:32,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08e88b2e3/158c7b315ac14d51a5d5ca30cb826bcd [2020-08-18 10:21:32,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:21:32,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:21:32,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:32,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:21:32,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:21:32,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:32" (1/1) ... [2020-08-18 10:21:32,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d31571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:32, skipping insertion in model container [2020-08-18 10:21:32,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:32" (1/1) ... [2020-08-18 10:21:32,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:21:32,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:21:33,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:33,244 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:21:33,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:33,396 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:21:33,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33 WrapperNode [2020-08-18 10:21:33,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:33,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:21:33,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:21:33,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:21:33,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (1/1) ... [2020-08-18 10:21:33,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:21:33,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:21:33,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:21:33,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:21:33,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (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 10:21:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:21:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:21:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:21:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:21:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:21:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:21:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:21:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:21:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:21:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:21:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:21:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:21:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:21:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:21:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:21:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:21:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:21:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:21:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:21:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:21:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:21:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:21:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:21:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:21:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:21:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:21:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:21:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:21:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:21:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:21:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:21:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:21:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:21:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:21:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:21:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:21:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:21:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:21:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:21:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:21:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:21:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:21:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:21:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:21:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:21:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:21:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:21:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:21:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:21:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:21:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:33,593 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:33,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:21:33,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:21:33,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:21:33,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:21:33,594 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:21:33,594 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:21:33,594 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:21:33,594 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:21:33,594 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:21:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:21:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:21:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:21:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:21:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:21:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:21:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:21:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:21:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:21:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:21:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:21:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:21:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:21:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:21:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:21:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:21:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:21:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:21:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:21:34,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:21:34,596 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:21:34,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:34 BoogieIcfgContainer [2020-08-18 10:21:34,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:21:34,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:21:34,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:21:34,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:21:34,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:21:32" (1/3) ... [2020-08-18 10:21:34,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcc5fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:34, skipping insertion in model container [2020-08-18 10:21:34,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:33" (2/3) ... [2020-08-18 10:21:34,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcc5fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:34, skipping insertion in model container [2020-08-18 10:21:34,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:34" (3/3) ... [2020-08-18 10:21:34,610 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product04.cil.c [2020-08-18 10:21:34,620 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:21:34,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:21:34,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:21:34,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:21:34,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:21:34,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:21:34,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:21:34,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:21:34,668 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:21:34,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:21:34,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:21:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-08-18 10:21:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:21:34,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:34,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:34,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:34,711 INFO L82 PathProgramCache]: Analyzing trace with hash -403347124, now seen corresponding path program 1 times [2020-08-18 10:21:34,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:34,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144483283] [2020-08-18 10:21:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,288 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:35,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,378 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 10:21:35,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144483283] [2020-08-18 10:21:35,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:35,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:21:35,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571220743] [2020-08-18 10:21:35,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:21:35,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:21:35,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:21:35,406 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 3 states. [2020-08-18 10:21:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:36,363 INFO L93 Difference]: Finished difference Result 240 states and 317 transitions. [2020-08-18 10:21:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:21:36,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 10:21:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:36,381 INFO L225 Difference]: With dead ends: 240 [2020-08-18 10:21:36,381 INFO L226 Difference]: Without dead ends: 131 [2020-08-18 10:21:36,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 10:21:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-18 10:21:36,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2020-08-18 10:21:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 10:21:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 10:21:36,465 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 52 [2020-08-18 10:21:36,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:36,466 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 10:21:36,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:21:36,466 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 10:21:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 10:21:36,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:36,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:36,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:21:36,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:36,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1720191538, now seen corresponding path program 1 times [2020-08-18 10:21:36,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:36,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843930205] [2020-08-18 10:21:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,823 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:21:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:21:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,880 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 10:21:36,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843930205] [2020-08-18 10:21:36,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:36,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:21:36,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514117630] [2020-08-18 10:21:36,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:21:36,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:36,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:21:36,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:21:36,888 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 4 states. [2020-08-18 10:21:37,335 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:37,927 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2020-08-18 10:21:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:21:37,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 10:21:37,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:37,931 INFO L225 Difference]: With dead ends: 160 [2020-08-18 10:21:37,931 INFO L226 Difference]: Without dead ends: 115 [2020-08-18 10:21:37,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:21:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-18 10:21:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2020-08-18 10:21:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-18 10:21:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-18 10:21:38,010 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 53 [2020-08-18 10:21:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:38,010 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-18 10:21:38,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:21:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-18 10:21:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 10:21:38,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:38,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:38,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:21:38,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:38,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:38,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1933430427, now seen corresponding path program 1 times [2020-08-18 10:21:38,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:38,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797993800] [2020-08-18 10:21:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,391 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:21:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:38,484 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 10:21:38,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797993800] [2020-08-18 10:21:38,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:38,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:38,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759297188] [2020-08-18 10:21:38,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:38,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:38,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:38,487 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 8 states. [2020-08-18 10:21:38,823 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:39,131 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:39,358 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:39,582 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:40,295 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:41,419 INFO L93 Difference]: Finished difference Result 326 states and 401 transitions. [2020-08-18 10:21:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:21:41,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 10:21:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:41,425 INFO L225 Difference]: With dead ends: 326 [2020-08-18 10:21:41,425 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 10:21:41,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:21:41,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 10:21:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 190. [2020-08-18 10:21:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 10:21:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2020-08-18 10:21:41,493 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 58 [2020-08-18 10:21:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:41,493 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2020-08-18 10:21:41,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2020-08-18 10:21:41,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 10:21:41,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:41,496 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] [2020-08-18 10:21:41,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:21:41,497 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1944220283, now seen corresponding path program 1 times [2020-08-18 10:21:41,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:41,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315375825] [2020-08-18 10:21:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,810 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:21:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:21:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:21:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:21:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,885 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 10:21:41,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315375825] [2020-08-18 10:21:41,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:41,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:21:41,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50081252] [2020-08-18 10:21:41,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:21:41,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:41,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:21:41,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:21:41,888 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand 7 states. [2020-08-18 10:21:42,247 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:43,179 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:43,467 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:43,698 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:43,933 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:44,197 INFO L93 Difference]: Finished difference Result 537 states and 682 transitions. [2020-08-18 10:21:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:21:44,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-18 10:21:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:44,202 INFO L225 Difference]: With dead ends: 537 [2020-08-18 10:21:44,203 INFO L226 Difference]: Without dead ends: 371 [2020-08-18 10:21:44,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:21:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-18 10:21:44,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 349. [2020-08-18 10:21:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-08-18 10:21:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 425 transitions. [2020-08-18 10:21:44,311 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 425 transitions. Word has length 61 [2020-08-18 10:21:44,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:44,312 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 425 transitions. [2020-08-18 10:21:44,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:21:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 425 transitions. [2020-08-18 10:21:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:21:44,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:44,315 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] [2020-08-18 10:21:44,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:21:44,316 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1974146389, now seen corresponding path program 1 times [2020-08-18 10:21:44,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:44,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115010110] [2020-08-18 10:21:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,623 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:21:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:21:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:21:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 10:21:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,685 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 10:21:44,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115010110] [2020-08-18 10:21:44,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:44,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:21:44,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627628721] [2020-08-18 10:21:44,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:21:44,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:21:44,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:21:44,687 INFO L87 Difference]: Start difference. First operand 349 states and 425 transitions. Second operand 5 states. [2020-08-18 10:21:44,961 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:45,543 INFO L93 Difference]: Finished difference Result 642 states and 802 transitions. [2020-08-18 10:21:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 10:21:45,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-08-18 10:21:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:45,547 INFO L225 Difference]: With dead ends: 642 [2020-08-18 10:21:45,547 INFO L226 Difference]: Without dead ends: 317 [2020-08-18 10:21:45,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:21:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-18 10:21:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2020-08-18 10:21:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-18 10:21:45,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 354 transitions. [2020-08-18 10:21:45,653 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 354 transitions. Word has length 65 [2020-08-18 10:21:45,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:45,654 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 354 transitions. [2020-08-18 10:21:45,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:21:45,654 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 354 transitions. [2020-08-18 10:21:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:21:45,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:45,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:45,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:21:45,657 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:45,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1832330753, now seen corresponding path program 1 times [2020-08-18 10:21:45,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:45,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475479918] [2020-08-18 10:21:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:21:45,729 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:21:45,730 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:21:45,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:21:45,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:21:45 BoogieIcfgContainer [2020-08-18 10:21:45,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:21:45,758 INFO L168 Benchmark]: Toolchain (without parser) took 13007.39 ms. Allocated memory was 142.1 MB in the beginning and 481.8 MB in the end (delta: 339.7 MB). Free memory was 100.9 MB in the beginning and 413.7 MB in the end (delta: -312.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:45,759 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 142.1 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 10:21:45,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.17 ms. Allocated memory was 142.1 MB in the beginning and 202.4 MB in the end (delta: 60.3 MB). Free memory was 100.7 MB in the beginning and 170.1 MB in the end (delta: -69.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:45,761 INFO L168 Benchmark]: Boogie Preprocessor took 107.45 ms. Allocated memory is still 202.4 MB. Free memory was 170.1 MB in the beginning and 166.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:45,762 INFO L168 Benchmark]: RCFGBuilder took 1096.53 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 166.0 MB in the beginning and 199.5 MB in the end (delta: -33.4 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:45,763 INFO L168 Benchmark]: TraceAbstraction took 11153.42 ms. Allocated memory was 234.4 MB in the beginning and 481.8 MB in the end (delta: 247.5 MB). Free memory was 199.5 MB in the beginning and 413.7 MB in the end (delta: -214.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:45,766 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 142.1 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.17 ms. Allocated memory was 142.1 MB in the beginning and 202.4 MB in the end (delta: 60.3 MB). Free memory was 100.7 MB in the beginning and 170.1 MB in the end (delta: -69.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.45 ms. Allocated memory is still 202.4 MB. Free memory was 170.1 MB in the beginning and 166.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1096.53 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 166.0 MB in the beginning and 199.5 MB in the end (delta: -33.4 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11153.42 ms. Allocated memory was 234.4 MB in the beginning and 481.8 MB in the end (delta: 247.5 MB). Free memory was 199.5 MB in the beginning and 413.7 MB in the end (delta: -214.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 633]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L46] int waterLevel = 1; [L47] int methaneLevelCritical = 0; [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L530] int cleanupTimeShifts = 4; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L606] int retValue_acc ; [L607] int tmp ; [L611] FCALL select_helpers() [L612] FCALL select_features() [L613] CALL, EXPR valid_product() [L521] int retValue_acc ; [L524] retValue_acc = 1 [L525] return (retValue_acc); [L613] RET, EXPR valid_product() [L613] tmp = valid_product() [L615] COND TRUE \read(tmp) [L617] FCALL setup() [L618] CALL runTest() [L600] CALL test() [L808] int splverifierCounter ; [L809] int tmp ; [L810] int tmp___0 ; [L811] int tmp___1 ; [L812] int tmp___2 ; [L815] splverifierCounter = 0 [L817] COND TRUE 1 [L819] COND TRUE splverifierCounter < 4 [L825] tmp = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp) [L829] CALL waterRise() [L64] COND TRUE waterLevel < 2 [L65] waterLevel = waterLevel + 1 [L829] RET waterRise() [L835] tmp___0 = __VERIFIER_nondet_int() [L837] COND FALSE !(\read(tmp___0)) [L845] tmp___2 = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp___2)) [L853] tmp___1 = __VERIFIER_nondet_int() [L855] COND FALSE !(\read(tmp___1)) [L864] CALL timeShift() [L684] COND FALSE !(\read(pumpRunning)) [L691] COND TRUE \read(systemActive) [L693] FCALL processEnvironment() [L699] CALL __utac_acc__Specification3_spec__1() [L640] int tmp ; [L641] int tmp___0 ; [L642] int tmp___1 ; [L646] CALL, EXPR isMethaneLevelCritical() [L85] int retValue_acc ; [L88] retValue_acc = methaneLevelCritical [L89] return (retValue_acc); [L646] RET, EXPR isMethaneLevelCritical() [L646] tmp = isMethaneLevelCritical() [L648] COND FALSE !(\read(tmp)) [L652] CALL, EXPR getWaterLevel() [L117] int retValue_acc ; [L120] retValue_acc = waterLevel [L121] return (retValue_acc); [L652] RET, EXPR getWaterLevel() [L652] tmp___0 = getWaterLevel() [L654] COND TRUE tmp___0 == 2 [L656] CALL, EXPR isPumpRunning() [L739] int retValue_acc ; [L742] retValue_acc = pumpRunning [L743] return (retValue_acc); [L656] RET, EXPR isPumpRunning() [L656] tmp___1 = isPumpRunning() [L658] COND FALSE !(\read(tmp___1)) [L662] CALL __automaton_fail() [L633] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 439 SDtfs, 641 SDslu, 330 SDs, 0 SdLazy, 1334 SolverSat, 395 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 160 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...