/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:10:28,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:10:28,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:10:28,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:10:28,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:10:28,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:10:28,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:10:28,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:10:28,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:10:28,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:10:28,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:10:28,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:10:28,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:10:28,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:10:28,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:10:28,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:10:28,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:10:28,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:10:28,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:10:28,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:10:28,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:10:28,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:10:28,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:10:28,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:10:28,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:10:28,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:10:28,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:10:28,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:10:28,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:10:28,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:10:28,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:10:28,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:10:28,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:10:28,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:10:28,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:10:28,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:10:28,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:10:28,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:10:28,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:10:28,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:10:28,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:10:28,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:10:28,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:10:28,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:10:28,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:10:28,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:10:28,499 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:10:28,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:10:28,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:10:28,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:10:28,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:10:28,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:10:28,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:10:28,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:10:28,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:10:28,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:10:28,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:10:28,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:10:28,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:10:28,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:10:28,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:10:28,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:10:28,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:10:28,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:10:28,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:10:28,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:10:28,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:10:28,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:10:28,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:10:28,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:10:28,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:10:28,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:10:28,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:10:28,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:10:28,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:10:28,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:10:28,855 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:10:28,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-22 01:10:28,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdf28f28f/ad3d8fd2a3904d94abc9c9ed87d7515c/FLAGa6c30b169 [2020-08-22 01:10:29,469 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:10:29,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-22 01:10:29,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdf28f28f/ad3d8fd2a3904d94abc9c9ed87d7515c/FLAGa6c30b169 [2020-08-22 01:10:29,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdf28f28f/ad3d8fd2a3904d94abc9c9ed87d7515c [2020-08-22 01:10:29,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:10:29,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:10:29,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:10:29,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:10:29,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:10:29,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:10:29" (1/1) ... [2020-08-22 01:10:29,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b20566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:29, skipping insertion in model container [2020-08-22 01:10:29,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:10:29" (1/1) ... [2020-08-22 01:10:29,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:10:29,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:10:30,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:10:30,193 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:10:30,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:10:30,446 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:10:30,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30 WrapperNode [2020-08-22 01:10:30,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:10:30,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:10:30,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:10:30,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:10:30,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (1/1) ... [2020-08-22 01:10:30,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (1/1) ... [2020-08-22 01:10:30,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (1/1) ... [2020-08-22 01:10:30,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (1/1) ... [2020-08-22 01:10:30,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (1/1) ... [2020-08-22 01:10:30,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (1/1) ... [2020-08-22 01:10:30,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (1/1) ... [2020-08-22 01:10:30,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:10:30,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:10:30,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:10:30,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:10:30,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:10:30,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:10:30,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:10:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:10:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:10:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:10:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:10:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:10:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:10:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:10:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:10:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:10:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:10:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:10:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:10:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:10:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:10:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:10:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:10:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:10:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:10:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:10:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:10:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:10:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:10:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:10:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:10:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:10:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:10:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:10:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:10:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:10:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:10:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:10:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:10:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:10:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:10:30,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:10:30,666 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:10:30,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:10:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:10:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:10:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:10:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:10:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:10:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:10:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:10:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:10:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:10:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:10:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:10:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:10:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:10:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:10:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:10:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:10:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:10:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:10:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:10:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:10:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:10:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:10:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:10:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:10:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:10:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:10:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:10:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:10:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:10:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:10:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:10:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:10:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:10:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:10:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:10:30,674 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:10:30,674 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:10:30,675 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:10:30,675 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:10:30,675 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:10:30,675 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:10:30,675 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:10:30,675 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:10:30,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:10:30,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:10:30,676 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:10:30,676 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:10:30,676 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:10:30,676 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:10:30,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:10:30,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:10:30,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:10:30,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:10:31,740 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:10:31,740 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:10:31,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:10:31 BoogieIcfgContainer [2020-08-22 01:10:31,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:10:31,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:10:31,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:10:31,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:10:31,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:10:29" (1/3) ... [2020-08-22 01:10:31,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d55f413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:10:31, skipping insertion in model container [2020-08-22 01:10:31,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:30" (2/3) ... [2020-08-22 01:10:31,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d55f413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:10:31, skipping insertion in model container [2020-08-22 01:10:31,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:10:31" (3/3) ... [2020-08-22 01:10:31,760 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-08-22 01:10:31,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:10:31,781 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:10:31,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:10:31,821 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:10:31,822 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:10:31,822 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:10:31,822 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:10:31,822 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:10:31,822 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:10:31,823 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:10:31,823 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:10:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-22 01:10:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 01:10:31,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:31,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:31,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:31,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:31,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-08-22 01:10:31,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:31,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788986890] [2020-08-22 01:10:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:32,592 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:32,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:32,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:32,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:10:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:10:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:10:32,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788986890] [2020-08-22 01:10:32,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:32,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:10:32,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000621257] [2020-08-22 01:10:32,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:10:32,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:32,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:10:32,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:10:32,723 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-22 01:10:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:33,907 INFO L93 Difference]: Finished difference Result 301 states and 397 transitions. [2020-08-22 01:10:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:10:33,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 01:10:33,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:33,924 INFO L225 Difference]: With dead ends: 301 [2020-08-22 01:10:33,925 INFO L226 Difference]: Without dead ends: 163 [2020-08-22 01:10:33,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:10:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-22 01:10:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-22 01:10:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 01:10:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-08-22 01:10:34,022 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-08-22 01:10:34,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:34,023 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-08-22 01:10:34,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:10:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-08-22 01:10:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 01:10:34,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:34,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:34,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:10:34,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-08-22 01:10:34,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:34,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110730037] [2020-08-22 01:10:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:34,401 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:34,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:34,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:10:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:10:34,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110730037] [2020-08-22 01:10:34,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:34,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:10:34,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205005795] [2020-08-22 01:10:34,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:10:34,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:34,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:10:34,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:10:34,447 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 4 states. [2020-08-22 01:10:34,871 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:35,701 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2020-08-22 01:10:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:10:35,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 01:10:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:35,713 INFO L225 Difference]: With dead ends: 228 [2020-08-22 01:10:35,714 INFO L226 Difference]: Without dead ends: 147 [2020-08-22 01:10:35,717 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 [2020-08-22 01:10:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-22 01:10:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-22 01:10:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 01:10:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-08-22 01:10:35,755 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-08-22 01:10:35,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:35,755 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-08-22 01:10:35,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:10:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-08-22 01:10:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 01:10:35,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:35,758 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] [2020-08-22 01:10:35,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:10:35,759 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:35,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-08-22 01:10:35,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:35,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592056811] [2020-08-22 01:10:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,100 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:10:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:10:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:10:36,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592056811] [2020-08-22 01:10:36,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:36,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:10:36,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458540942] [2020-08-22 01:10:36,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:10:36,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:36,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:10:36,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:10:36,195 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 8 states. [2020-08-22 01:10:36,598 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:36,883 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:37,135 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:37,373 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:38,124 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:39,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:39,766 INFO L93 Difference]: Finished difference Result 412 states and 515 transitions. [2020-08-22 01:10:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:10:39,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 01:10:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:39,772 INFO L225 Difference]: With dead ends: 412 [2020-08-22 01:10:39,772 INFO L226 Difference]: Without dead ends: 316 [2020-08-22 01:10:39,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:10:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-22 01:10:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2020-08-22 01:10:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-22 01:10:39,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 314 transitions. [2020-08-22 01:10:39,839 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 314 transitions. Word has length 51 [2020-08-22 01:10:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:39,840 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 314 transitions. [2020-08-22 01:10:39,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:10:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 314 transitions. [2020-08-22 01:10:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 01:10:39,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:39,843 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] [2020-08-22 01:10:39,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:10:39,844 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:39,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:39,844 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-08-22 01:10:39,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:39,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333351356] [2020-08-22 01:10:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,157 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:40,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:10:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:10:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:10:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:10:40,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333351356] [2020-08-22 01:10:40,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:40,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:10:40,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929661875] [2020-08-22 01:10:40,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:10:40,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:40,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:10:40,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:10:40,257 INFO L87 Difference]: Start difference. First operand 258 states and 314 transitions. Second operand 8 states. [2020-08-22 01:10:40,663 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:41,624 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:42,028 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:42,337 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:42,638 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:43,160 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:44,184 INFO L93 Difference]: Finished difference Result 832 states and 1087 transitions. [2020-08-22 01:10:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:10:44,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 01:10:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:44,192 INFO L225 Difference]: With dead ends: 832 [2020-08-22 01:10:44,193 INFO L226 Difference]: Without dead ends: 598 [2020-08-22 01:10:44,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:10:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-08-22 01:10:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 471. [2020-08-22 01:10:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-08-22 01:10:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 578 transitions. [2020-08-22 01:10:44,342 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 578 transitions. Word has length 57 [2020-08-22 01:10:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:44,343 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 578 transitions. [2020-08-22 01:10:44,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:10:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 578 transitions. [2020-08-22 01:10:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 01:10:44,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:44,347 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] [2020-08-22 01:10:44,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:10:44,348 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash -690329863, now seen corresponding path program 1 times [2020-08-22 01:10:44,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:44,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657154040] [2020-08-22 01:10:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,627 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:44,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:10:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:10:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:10:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:10:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:10:44,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657154040] [2020-08-22 01:10:44,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:44,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:10:44,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790943923] [2020-08-22 01:10:44,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:10:44,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:44,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:10:44,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:10:44,745 INFO L87 Difference]: Start difference. First operand 471 states and 578 transitions. Second operand 9 states. [2020-08-22 01:10:45,161 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:46,101 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:46,398 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:46,667 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:47,221 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:47,523 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:48,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:48,453 INFO L93 Difference]: Finished difference Result 1331 states and 1800 transitions. [2020-08-22 01:10:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:10:48,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 01:10:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:48,466 INFO L225 Difference]: With dead ends: 1331 [2020-08-22 01:10:48,466 INFO L226 Difference]: Without dead ends: 884 [2020-08-22 01:10:48,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:10:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-08-22 01:10:48,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 703. [2020-08-22 01:10:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-22 01:10:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 871 transitions. [2020-08-22 01:10:48,649 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 871 transitions. Word has length 61 [2020-08-22 01:10:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:48,650 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 871 transitions. [2020-08-22 01:10:48,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:10:48,650 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 871 transitions. [2020-08-22 01:10:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 01:10:48,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:48,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:48,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:10:48,653 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:48,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1573489665, now seen corresponding path program 1 times [2020-08-22 01:10:48,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:48,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082881375] [2020-08-22 01:10:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:48,937 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:48,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:48,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:10:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:48,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:10:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:10:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 01:10:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 01:10:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:10:49,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082881375] [2020-08-22 01:10:49,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:49,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:10:49,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828933055] [2020-08-22 01:10:49,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:10:49,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:10:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:10:49,062 INFO L87 Difference]: Start difference. First operand 703 states and 871 transitions. Second operand 9 states. [2020-08-22 01:10:49,672 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:50,613 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:50,880 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:10:51,137 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:51,387 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:53,066 INFO L93 Difference]: Finished difference Result 2338 states and 3323 transitions. [2020-08-22 01:10:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:10:53,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 01:10:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:53,080 INFO L225 Difference]: With dead ends: 2338 [2020-08-22 01:10:53,081 INFO L226 Difference]: Without dead ends: 1659 [2020-08-22 01:10:53,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:10:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-22 01:10:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1259. [2020-08-22 01:10:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-08-22 01:10:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1546 transitions. [2020-08-22 01:10:53,308 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1546 transitions. Word has length 83 [2020-08-22 01:10:53,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:53,310 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1546 transitions. [2020-08-22 01:10:53,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:10:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1546 transitions. [2020-08-22 01:10:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 01:10:53,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:53,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:53,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:10:53,318 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:53,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:53,318 INFO L82 PathProgramCache]: Analyzing trace with hash 547997666, now seen corresponding path program 1 times [2020-08-22 01:10:53,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:53,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148199763] [2020-08-22 01:10:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,582 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:10:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:10:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:10:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 01:10:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 01:10:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:10:53,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148199763] [2020-08-22 01:10:53,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:53,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:10:53,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977010671] [2020-08-22 01:10:53,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:10:53,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:53,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:10:53,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:10:53,743 INFO L87 Difference]: Start difference. First operand 1259 states and 1546 transitions. Second operand 9 states. [2020-08-22 01:10:54,812 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:55,051 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:10:55,322 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:55,579 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:56,777 INFO L93 Difference]: Finished difference Result 2894 states and 3849 transitions. [2020-08-22 01:10:56,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:10:56,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 01:10:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:56,792 INFO L225 Difference]: With dead ends: 2894 [2020-08-22 01:10:56,792 INFO L226 Difference]: Without dead ends: 1659 [2020-08-22 01:10:56,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:10:56,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-22 01:10:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1299. [2020-08-22 01:10:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-22 01:10:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1586 transitions. [2020-08-22 01:10:57,088 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1586 transitions. Word has length 83 [2020-08-22 01:10:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:57,089 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1586 transitions. [2020-08-22 01:10:57,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:10:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1586 transitions. [2020-08-22 01:10:57,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 01:10:57,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:57,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:57,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:10:57,094 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:57,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:57,094 INFO L82 PathProgramCache]: Analyzing trace with hash 570629920, now seen corresponding path program 1 times [2020-08-22 01:10:57,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:57,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637286150] [2020-08-22 01:10:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,422 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:57,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:10:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:10:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:10:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 01:10:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 01:10:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:10:57,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637286150] [2020-08-22 01:10:57,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:57,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:10:57,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575249394] [2020-08-22 01:10:57,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:10:57,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:57,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:10:57,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:10:57,548 INFO L87 Difference]: Start difference. First operand 1299 states and 1586 transitions. Second operand 11 states. [2020-08-22 01:10:58,238 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:58,461 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:58,684 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:59,405 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:59,686 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:59,954 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:11:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:11:01,202 INFO L93 Difference]: Finished difference Result 2592 states and 3413 transitions. [2020-08-22 01:11:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:11:01,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-22 01:11:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:11:01,211 INFO L225 Difference]: With dead ends: 2592 [2020-08-22 01:11:01,212 INFO L226 Difference]: Without dead ends: 1317 [2020-08-22 01:11:01,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:11:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-22 01:11:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1073. [2020-08-22 01:11:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-08-22 01:11:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1282 transitions. [2020-08-22 01:11:01,439 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1282 transitions. Word has length 83 [2020-08-22 01:11:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:11:01,440 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1282 transitions. [2020-08-22 01:11:01,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:11:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1282 transitions. [2020-08-22 01:11:01,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 01:11:01,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:11:01,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:11:01,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:11:01,444 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:11:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:11:01,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-08-22 01:11:01,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:11:01,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452880267] [2020-08-22 01:11:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:11:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:11:01,526 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:11:01,527 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:11:01,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:11:01,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:11:01 BoogieIcfgContainer [2020-08-22 01:11:01,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:11:01,573 INFO L168 Benchmark]: Toolchain (without parser) took 31820.06 ms. Allocated memory was 146.8 MB in the beginning and 618.7 MB in the end (delta: 471.9 MB). Free memory was 102.6 MB in the beginning and 550.0 MB in the end (delta: -447.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:11:01,576 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 01:11:01,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.56 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.4 MB in the beginning and 172.9 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-22 01:11:01,588 INFO L168 Benchmark]: Boogie Preprocessor took 114.42 ms. Allocated memory is still 203.4 MB. Free memory was 172.9 MB in the beginning and 168.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:11:01,589 INFO L168 Benchmark]: RCFGBuilder took 1187.60 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 198.2 MB in the end (delta: -29.6 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:11:01,590 INFO L168 Benchmark]: TraceAbstraction took 29818.03 ms. Allocated memory was 236.5 MB in the beginning and 618.7 MB in the end (delta: 382.2 MB). Free memory was 198.2 MB in the beginning and 550.0 MB in the end (delta: -351.9 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:11:01,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.56 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.4 MB in the beginning and 172.9 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.42 ms. Allocated memory is still 203.4 MB. Free memory was 172.9 MB in the beginning and 168.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1187.60 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 198.2 MB in the end (delta: -29.6 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29818.03 ms. Allocated memory was 236.5 MB in the beginning and 618.7 MB in the end (delta: 382.2 MB). Free memory was 198.2 MB in the beginning and 550.0 MB in the end (delta: -351.9 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 907 SDtfs, 1603 SDslu, 1172 SDs, 0 SdLazy, 5328 SolverSat, 1013 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1299occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1431 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 147464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...