/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:19:53,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:19:53,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:19:53,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:19:53,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:19:53,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:19:53,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:19:53,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:19:53,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:19:53,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:19:53,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:19:53,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:19:53,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:19:53,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:19:53,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:19:53,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:19:53,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:19:53,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:19:53,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:19:53,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:19:53,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:19:53,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:19:53,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:19:53,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:19:53,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:19:53,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:19:53,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:19:53,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:19:53,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:19:53,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:19:53,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:19:53,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:19:53,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:19:53,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:19:53,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:19:53,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:19:53,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:19:53,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:19:53,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:19:53,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:19:53,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:19:53,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:19:53,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:19:53,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:19:53,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:19:53,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:19:53,521 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:19:53,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:19:53,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:19:53,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:19:53,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:19:53,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:19:53,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:19:53,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:19:53,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:19:53,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:19:53,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:19:53,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:19:53,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:19:53,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:19:53,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:19:53,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:19:53,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:19:53,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:19:53,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:19:53,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:19:53,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:19:53,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:19:53,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:19:53,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:19:53,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:19:53,526 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:19:53,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:19:53,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:19:53,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:19:53,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:19:53,897 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:19:53,898 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-08-18 23:19:53,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfba8484/a8e2150d882c42898b2902cd622709c2/FLAGf4e513899 [2020-08-18 23:19:54,499 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:19:54,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-08-18 23:19:54,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfba8484/a8e2150d882c42898b2902cd622709c2/FLAGf4e513899 [2020-08-18 23:19:54,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfba8484/a8e2150d882c42898b2902cd622709c2 [2020-08-18 23:19:54,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:19:54,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:19:54,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:19:54,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:19:54,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:19:54,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:19:54" (1/1) ... [2020-08-18 23:19:54,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e57099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:54, skipping insertion in model container [2020-08-18 23:19:54,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:19:54" (1/1) ... [2020-08-18 23:19:54,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:19:54,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:19:55,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:19:55,370 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:19:55,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:19:55,537 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:19:55,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55 WrapperNode [2020-08-18 23:19:55,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:19:55,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:19:55,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:19:55,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:19:55,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (1/1) ... [2020-08-18 23:19:55,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (1/1) ... [2020-08-18 23:19:55,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (1/1) ... [2020-08-18 23:19:55,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (1/1) ... [2020-08-18 23:19:55,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (1/1) ... [2020-08-18 23:19:55,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (1/1) ... [2020-08-18 23:19:55,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (1/1) ... [2020-08-18 23:19:55,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:19:55,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:19:55,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:19:55,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:19:55,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:19:55,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:19:55,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:19:55,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:19:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:19:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:19:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:19:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:19:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:19:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:19:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:19:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:19:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:19:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:19:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:19:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:19:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:19:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:19:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:19:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:19:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:19:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:19:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:19:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:19:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:19:55,687 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:19:55,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 23:19:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 23:19:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:19:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:19:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:19:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:19:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 23:19:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:19:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:19:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:19:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:19:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:19:55,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:19:55,691 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 23:19:55,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:19:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:19:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:19:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:19:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:19:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:19:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:19:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:19:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:19:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:19:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:19:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:19:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:19:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:19:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:19:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:19:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:19:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:19:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:19:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:19:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:19:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:19:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:19:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:19:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 23:19:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:19:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:19:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:19:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:19:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:19:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:19:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:19:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:19:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:19:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 23:19:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 23:19:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:19:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:19:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:19:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:19:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:19:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 23:19:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:19:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:19:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:19:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:19:56,740 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:19:56,740 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:19:56,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:19:56 BoogieIcfgContainer [2020-08-18 23:19:56,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:19:56,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:19:56,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:19:56,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:19:56,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:19:54" (1/3) ... [2020-08-18 23:19:56,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76df2fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:19:56, skipping insertion in model container [2020-08-18 23:19:56,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:19:55" (2/3) ... [2020-08-18 23:19:56,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76df2fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:19:56, skipping insertion in model container [2020-08-18 23:19:56,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:19:56" (3/3) ... [2020-08-18 23:19:56,753 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2020-08-18 23:19:56,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:19:56,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:19:56,784 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:19:56,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:19:56,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:19:56,808 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:19:56,808 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:19:56,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:19:56,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:19:56,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:19:56,809 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:19:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-18 23:19:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 23:19:56,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:19:56,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:19:56,841 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:19:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:19:56,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1550952004, now seen corresponding path program 1 times [2020-08-18 23:19:56,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:19:56,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768213637] [2020-08-18 23:19:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:19:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,534 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:19:57,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:19:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:19:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:19:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:19:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:19:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:19:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:19:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:19:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:19:57,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768213637] [2020-08-18 23:19:57,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:19:57,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:19:57,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988331842] [2020-08-18 23:19:57,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:19:57,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:19:57,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:19:57,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:19:57,728 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-08-18 23:19:58,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:19:58,782 INFO L93 Difference]: Finished difference Result 295 states and 383 transitions. [2020-08-18 23:19:58,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:19:58,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 23:19:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:19:58,797 INFO L225 Difference]: With dead ends: 295 [2020-08-18 23:19:58,798 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 23:19:58,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:19:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 23:19:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-18 23:19:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-18 23:19:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-08-18 23:19:58,922 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 51 [2020-08-18 23:19:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:19:58,923 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-08-18 23:19:58,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:19:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-08-18 23:19:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:19:58,926 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:19:58,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:19:58,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:19:58,927 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:19:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:19:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash -185895496, now seen corresponding path program 1 times [2020-08-18 23:19:58,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:19:58,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193123914] [2020-08-18 23:19:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:19:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,214 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:19:59,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:19:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:19:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:19:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:19:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:19:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:19:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:19:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:19:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:19:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:19:59,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193123914] [2020-08-18 23:19:59,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:19:59,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:19:59,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621718663] [2020-08-18 23:19:59,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:19:59,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:19:59,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:19:59,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:19:59,273 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 5 states. [2020-08-18 23:19:59,795 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:00,643 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2020-08-18 23:20:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 23:20:00,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 23:20:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:00,647 INFO L225 Difference]: With dead ends: 231 [2020-08-18 23:20:00,647 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 23:20:00,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:20:00,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 23:20:00,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 122. [2020-08-18 23:20:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 23:20:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2020-08-18 23:20:00,687 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 52 [2020-08-18 23:20:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:00,688 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2020-08-18 23:20:00,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:20:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2020-08-18 23:20:00,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 23:20:00,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:00,690 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] [2020-08-18 23:20:00,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:20:00,691 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:00,691 INFO L82 PathProgramCache]: Analyzing trace with hash 794087253, now seen corresponding path program 1 times [2020-08-18 23:20:00,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:00,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628808808] [2020-08-18 23:20:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:00,994 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:00,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:01,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:01,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:20:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:01,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:20:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:01,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628808808] [2020-08-18 23:20:01,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:01,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:20:01,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60462512] [2020-08-18 23:20:01,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:20:01,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:01,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:20:01,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:20:01,133 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand 9 states. [2020-08-18 23:20:01,540 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:01,845 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:02,105 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:02,338 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:03,129 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:04,787 INFO L93 Difference]: Finished difference Result 414 states and 517 transitions. [2020-08-18 23:20:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:20:04,788 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 23:20:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:04,793 INFO L225 Difference]: With dead ends: 414 [2020-08-18 23:20:04,793 INFO L226 Difference]: Without dead ends: 320 [2020-08-18 23:20:04,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:20:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-18 23:20:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 247. [2020-08-18 23:20:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-18 23:20:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 296 transitions. [2020-08-18 23:20:04,868 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 296 transitions. Word has length 56 [2020-08-18 23:20:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:04,869 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 296 transitions. [2020-08-18 23:20:04,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:20:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 296 transitions. [2020-08-18 23:20:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 23:20:04,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:04,871 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] [2020-08-18 23:20:04,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:20:04,872 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:04,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2145966964, now seen corresponding path program 1 times [2020-08-18 23:20:04,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:04,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056547805] [2020-08-18 23:20:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,214 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:05,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:20:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:20:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 23:20:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:05,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056547805] [2020-08-18 23:20:05,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:05,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:20:05,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116868617] [2020-08-18 23:20:05,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:20:05,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:05,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:20:05,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:20:05,298 INFO L87 Difference]: Start difference. First operand 247 states and 296 transitions. Second operand 9 states. [2020-08-18 23:20:05,682 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:06,866 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:07,170 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:07,406 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:07,669 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:08,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:08,679 INFO L93 Difference]: Finished difference Result 791 states and 1035 transitions. [2020-08-18 23:20:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 23:20:08,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 23:20:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:08,691 INFO L225 Difference]: With dead ends: 791 [2020-08-18 23:20:08,691 INFO L226 Difference]: Without dead ends: 572 [2020-08-18 23:20:08,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 23:20:08,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-08-18 23:20:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 442. [2020-08-18 23:20:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 23:20:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 532 transitions. [2020-08-18 23:20:08,841 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 532 transitions. Word has length 62 [2020-08-18 23:20:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:08,842 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 532 transitions. [2020-08-18 23:20:08,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:20:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 532 transitions. [2020-08-18 23:20:08,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 23:20:08,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:08,845 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] [2020-08-18 23:20:08,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:20:08,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:08,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:08,846 INFO L82 PathProgramCache]: Analyzing trace with hash -664368024, now seen corresponding path program 1 times [2020-08-18 23:20:08,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:08,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156615501] [2020-08-18 23:20:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,114 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:20:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 23:20:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 23:20:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:09,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156615501] [2020-08-18 23:20:09,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:09,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:20:09,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254904702] [2020-08-18 23:20:09,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:20:09,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:09,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:20:09,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:20:09,224 INFO L87 Difference]: Start difference. First operand 442 states and 532 transitions. Second operand 10 states. [2020-08-18 23:20:09,666 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:10,660 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:10,945 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:11,189 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:11,842 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:12,798 INFO L93 Difference]: Finished difference Result 1232 states and 1648 transitions. [2020-08-18 23:20:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 23:20:12,801 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 23:20:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:12,808 INFO L225 Difference]: With dead ends: 1232 [2020-08-18 23:20:12,808 INFO L226 Difference]: Without dead ends: 818 [2020-08-18 23:20:12,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 23:20:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-08-18 23:20:12,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 633. [2020-08-18 23:20:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-08-18 23:20:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 763 transitions. [2020-08-18 23:20:12,956 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 763 transitions. Word has length 66 [2020-08-18 23:20:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:12,957 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 763 transitions. [2020-08-18 23:20:12,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:20:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 763 transitions. [2020-08-18 23:20:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 23:20:12,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:12,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:12,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:20:12,961 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1705973146, now seen corresponding path program 1 times [2020-08-18 23:20:12,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:12,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244543901] [2020-08-18 23:20:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,205 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:13,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:20:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 23:20:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 23:20:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:20:13,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244543901] [2020-08-18 23:20:13,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:13,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:20:13,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985222871] [2020-08-18 23:20:13,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:20:13,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:13,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:20:13,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:20:13,369 INFO L87 Difference]: Start difference. First operand 633 states and 763 transitions. Second operand 10 states. [2020-08-18 23:20:13,771 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:14,683 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:14,921 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 23:20:15,199 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:15,442 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:17,501 INFO L93 Difference]: Finished difference Result 2244 states and 3169 transitions. [2020-08-18 23:20:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 23:20:17,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-18 23:20:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:17,520 INFO L225 Difference]: With dead ends: 2244 [2020-08-18 23:20:17,520 INFO L226 Difference]: Without dead ends: 1639 [2020-08-18 23:20:17,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 23:20:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-08-18 23:20:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1215. [2020-08-18 23:20:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-08-18 23:20:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1468 transitions. [2020-08-18 23:20:17,821 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1468 transitions. Word has length 98 [2020-08-18 23:20:17,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:17,821 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1468 transitions. [2020-08-18 23:20:17,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:20:17,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1468 transitions. [2020-08-18 23:20:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 23:20:17,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:17,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:17,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:20:17,830 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:17,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1619413127, now seen corresponding path program 1 times [2020-08-18 23:20:17,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:17,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537893062] [2020-08-18 23:20:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,090 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:20:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 23:20:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 23:20:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:20:18,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537893062] [2020-08-18 23:20:18,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:18,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:20:18,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710272421] [2020-08-18 23:20:18,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:20:18,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:18,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:20:18,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:20:18,281 INFO L87 Difference]: Start difference. First operand 1215 states and 1468 transitions. Second operand 10 states. [2020-08-18 23:20:19,254 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:19,510 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:20:19,776 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:20,027 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:21,399 INFO L93 Difference]: Finished difference Result 2855 states and 3863 transitions. [2020-08-18 23:20:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:20:21,400 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-18 23:20:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:21,416 INFO L225 Difference]: With dead ends: 2855 [2020-08-18 23:20:21,416 INFO L226 Difference]: Without dead ends: 1668 [2020-08-18 23:20:21,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:20:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-18 23:20:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1255. [2020-08-18 23:20:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2020-08-18 23:20:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1508 transitions. [2020-08-18 23:20:21,737 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1508 transitions. Word has length 98 [2020-08-18 23:20:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:21,738 INFO L479 AbstractCegarLoop]: Abstraction has 1255 states and 1508 transitions. [2020-08-18 23:20:21,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:20:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1508 transitions. [2020-08-18 23:20:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 23:20:21,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:21,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:21,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:20:21,742 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:21,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:21,743 INFO L82 PathProgramCache]: Analyzing trace with hash -429974715, now seen corresponding path program 1 times [2020-08-18 23:20:21,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:21,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014929437] [2020-08-18 23:20:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,038 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:20:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 23:20:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 23:20:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:20:22,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014929437] [2020-08-18 23:20:22,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:22,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:20:22,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377376526] [2020-08-18 23:20:22,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:20:22,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:22,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:20:22,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:20:22,224 INFO L87 Difference]: Start difference. First operand 1255 states and 1508 transitions. Second operand 12 states. [2020-08-18 23:20:23,087 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:23,323 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:23,564 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:24,231 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:24,476 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:24,718 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:25,978 INFO L93 Difference]: Finished difference Result 2487 states and 3257 transitions. [2020-08-18 23:20:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:20:25,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-08-18 23:20:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:25,989 INFO L225 Difference]: With dead ends: 2487 [2020-08-18 23:20:25,989 INFO L226 Difference]: Without dead ends: 1260 [2020-08-18 23:20:25,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:20:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-08-18 23:20:26,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 983. [2020-08-18 23:20:26,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-18 23:20:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1152 transitions. [2020-08-18 23:20:26,189 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1152 transitions. Word has length 98 [2020-08-18 23:20:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:26,190 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1152 transitions. [2020-08-18 23:20:26,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:20:26,190 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1152 transitions. [2020-08-18 23:20:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 23:20:26,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:26,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:26,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:20:26,195 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:26,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:26,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1139994370, now seen corresponding path program 1 times [2020-08-18 23:20:26,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:26,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287896547] [2020-08-18 23:20:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,530 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:20:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:20:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:20:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 23:20:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 23:20:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 23:20:26,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287896547] [2020-08-18 23:20:26,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:20:26,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 23:20:26,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701289830] [2020-08-18 23:20:26,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 23:20:26,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:26,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 23:20:26,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:20:26,975 INFO L87 Difference]: Start difference. First operand 983 states and 1152 transitions. Second operand 18 states. [2020-08-18 23:20:27,810 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:28,207 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 23:20:28,441 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:20:28,674 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:20:29,334 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:29,917 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:30,309 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:31,396 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:31,666 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:32,093 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:32,347 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:32,889 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 23:20:33,444 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 23:20:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:34,707 INFO L93 Difference]: Finished difference Result 2215 states and 2783 transitions. [2020-08-18 23:20:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 23:20:34,708 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-08-18 23:20:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:34,714 INFO L225 Difference]: With dead ends: 2215 [2020-08-18 23:20:34,714 INFO L226 Difference]: Without dead ends: 1260 [2020-08-18 23:20:34,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=506, Invalid=2044, Unknown=0, NotChecked=0, Total=2550 [2020-08-18 23:20:34,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-08-18 23:20:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 989. [2020-08-18 23:20:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-08-18 23:20:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1147 transitions. [2020-08-18 23:20:34,901 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1147 transitions. Word has length 102 [2020-08-18 23:20:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:34,901 INFO L479 AbstractCegarLoop]: Abstraction has 989 states and 1147 transitions. [2020-08-18 23:20:34,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 23:20:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1147 transitions. [2020-08-18 23:20:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 23:20:34,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:34,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:34,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:20:34,907 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash -194664218, now seen corresponding path program 1 times [2020-08-18 23:20:34,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:34,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731905447] [2020-08-18 23:20:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,234 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:35,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:20:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:20:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:20:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:20:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:20:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:20:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:20:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 23:20:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:20:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 23:20:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 23:20:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 23:20:35,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731905447] [2020-08-18 23:20:35,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:20:35,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 23:20:35,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804863629] [2020-08-18 23:20:35,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:20:35,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:35,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:20:35,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:20:35,373 INFO L87 Difference]: Start difference. First operand 989 states and 1147 transitions. Second operand 9 states. [2020-08-18 23:20:35,865 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:38,194 INFO L93 Difference]: Finished difference Result 1895 states and 2428 transitions. [2020-08-18 23:20:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 23:20:38,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-18 23:20:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:38,206 INFO L225 Difference]: With dead ends: 1895 [2020-08-18 23:20:38,206 INFO L226 Difference]: Without dead ends: 1892 [2020-08-18 23:20:38,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-08-18 23:20:38,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2020-08-18 23:20:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1482. [2020-08-18 23:20:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-18 23:20:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1712 transitions. [2020-08-18 23:20:38,492 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1712 transitions. Word has length 137 [2020-08-18 23:20:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:38,493 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1712 transitions. [2020-08-18 23:20:38,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:20:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1712 transitions. [2020-08-18 23:20:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-18 23:20:38,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:38,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:38,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:20:38,499 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:38,500 INFO L82 PathProgramCache]: Analyzing trace with hash -155772784, now seen corresponding path program 1 times [2020-08-18 23:20:38,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:38,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659192373] [2020-08-18 23:20:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:20:38,582 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:20:38,582 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:20:38,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:20:38,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:20:38 BoogieIcfgContainer [2020-08-18 23:20:38,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:20:38,645 INFO L168 Benchmark]: Toolchain (without parser) took 43779.59 ms. Allocated memory was 152.0 MB in the beginning and 669.5 MB in the end (delta: 517.5 MB). Free memory was 106.8 MB in the beginning and 104.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 519.6 MB. Max. memory is 7.1 GB. [2020-08-18 23:20:38,645 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 126.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 23:20:38,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.31 ms. Allocated memory was 152.0 MB in the beginning and 204.5 MB in the end (delta: 52.4 MB). Free memory was 106.6 MB in the beginning and 170.2 MB in the end (delta: -63.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:20:38,646 INFO L168 Benchmark]: Boogie Preprocessor took 83.69 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 165.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:20:38,647 INFO L168 Benchmark]: RCFGBuilder took 1123.30 ms. Allocated memory was 204.5 MB in the beginning and 230.2 MB in the end (delta: 25.7 MB). Free memory was 165.8 MB in the beginning and 179.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:20:38,647 INFO L168 Benchmark]: TraceAbstraction took 41890.75 ms. Allocated memory was 230.2 MB in the beginning and 669.5 MB in the end (delta: 439.4 MB). Free memory was 177.8 MB in the beginning and 104.7 MB in the end (delta: 73.1 MB). Peak memory consumption was 512.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:20:38,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 126.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.31 ms. Allocated memory was 152.0 MB in the beginning and 204.5 MB in the end (delta: 52.4 MB). Free memory was 106.6 MB in the beginning and 170.2 MB in the end (delta: -63.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.69 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 165.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1123.30 ms. Allocated memory was 204.5 MB in the beginning and 230.2 MB in the end (delta: 25.7 MB). Free memory was 165.8 MB in the beginning and 179.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41890.75 ms. Allocated memory was 230.2 MB in the beginning and 669.5 MB in the end (delta: 439.4 MB). Free memory was 177.8 MB in the beginning and 104.7 MB in the end (delta: 73.1 MB). Peak memory consumption was 512.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 946]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L507] int cleanupTimeShifts = 4; [L648] int methAndRunningLastTime ; [L757] int pumpRunning = 0; [L758] int systemActive = 1; [L588] int retValue_acc ; [L589] int tmp ; [L593] FCALL select_helpers() [L594] FCALL select_features() [L595] CALL, EXPR valid_product() [L637] int retValue_acc ; [L640] retValue_acc = 1 [L641] return (retValue_acc); [L595] RET, EXPR valid_product() [L595] tmp = valid_product() [L597] COND TRUE \read(tmp) [L599] FCALL setup() [L600] CALL runTest() [L578] CALL __utac_acc__Specification2_spec__1() [L653] methAndRunningLastTime = 0 [L578] RET __utac_acc__Specification2_spec__1() [L579] CALL test() [L689] int splverifierCounter ; [L690] int tmp ; [L691] int tmp___0 ; [L692] int tmp___1 ; [L693] int tmp___2 ; [L696] splverifierCounter = 0 [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND TRUE \read(tmp) [L710] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L710] RET waterRise() [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND FALSE !(\read(pumpRunning)) [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND TRUE ! pumpRunning [L798] CALL, EXPR isHighWaterLevel() [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; [L914] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L914] RET, EXPR isHighWaterSensorDry() [L914] tmp = isHighWaterSensorDry() [L916] COND FALSE !(\read(tmp)) [L919] tmp___0 = 1 [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); [L798] RET, EXPR isHighWaterLevel() [L798] tmp = isHighWaterLevel() [L800] COND TRUE \read(tmp) [L802] CALL activatePump() [L827] int tmp ; [L831] CALL, EXPR isMethaneAlarm() [L852] int retValue_acc ; [L856] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] retValue_acc = isMethaneLevelCritical() [L858] return (retValue_acc); [L831] RET, EXPR isMethaneAlarm() [L831] tmp = isMethaneAlarm() [L833] COND FALSE !(\read(tmp)) [L837] CALL activatePump__wrappee__highWaterSensor() [L821] pumpRunning = 1 [L837] RET activatePump__wrappee__highWaterSensor() [L802] RET activatePump() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L681] methAndRunningLastTime = 0 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp___0) [L720] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L720] RET changeMethaneLevel() [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND FALSE !(\read(methAndRunningLastTime)) [L675] methAndRunningLastTime = 1 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND TRUE \read(methAndRunningLastTime) [L672] CALL __automaton_fail() [L946] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.7s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1173 SDtfs, 3840 SDslu, 1772 SDs, 0 SdLazy, 8588 SolverSat, 2673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1482occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 2250 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 999 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 272874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 38/42 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...