/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:34:28,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:34:28,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:34:28,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:34:28,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:34:28,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:34:28,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:34:28,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:34:28,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:34:28,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:34:28,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:34:28,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:34:28,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:34:28,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:34:28,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:34:28,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:34:28,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:34:28,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:34:28,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:34:28,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:34:28,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:34:28,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:34:28,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:34:28,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:34:28,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:34:28,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:34:28,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:34:28,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:34:28,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:34:28,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:34:28,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:34:28,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:34:28,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:34:28,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:34:28,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:34:28,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:34:28,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:34:28,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:34:28,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:34:28,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:34:28,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:34:28,451 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 [2020-08-19 06:34:28,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:34:28,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:34:28,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:34:28,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:34:28,491 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:34:28,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:34:28,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:34:28,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:34:28,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:34:28,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:34:28,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:34:28,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:34:28,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:34:28,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:34:28,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:34:28,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:34:28,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:34:28,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:34:28,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:34:28,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:34:28,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:34:28,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:34:28,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:34:28,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:34:28,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:34:28,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:34:28,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:34:28,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:34:28,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:34:28,497 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=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:34:28,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:34:28,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:34:28,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:34:28,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:34:28,804 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:34:28,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-19 06:34:28,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e818004db/5b01c13c95094cc682fbf8a6b83a7d3f/FLAGf43f11f66 [2020-08-19 06:34:29,406 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:34:29,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-19 06:34:29,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e818004db/5b01c13c95094cc682fbf8a6b83a7d3f/FLAGf43f11f66 [2020-08-19 06:34:29,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e818004db/5b01c13c95094cc682fbf8a6b83a7d3f [2020-08-19 06:34:29,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:34:29,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:34:29,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:34:29,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:34:29,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:34:29,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:34:29" (1/1) ... [2020-08-19 06:34:29,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2894617f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:29, skipping insertion in model container [2020-08-19 06:34:29,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:34:29" (1/1) ... [2020-08-19 06:34:29,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:34:29,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:34:30,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:34:30,371 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:34:30,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:34:30,544 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:34:30,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30 WrapperNode [2020-08-19 06:34:30,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:34:30,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:34:30,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:34:30,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:34:30,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (1/1) ... [2020-08-19 06:34:30,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (1/1) ... [2020-08-19 06:34:30,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (1/1) ... [2020-08-19 06:34:30,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (1/1) ... [2020-08-19 06:34:30,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (1/1) ... [2020-08-19 06:34:30,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (1/1) ... [2020-08-19 06:34:30,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (1/1) ... [2020-08-19 06:34:30,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:34:30,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:34:30,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:34:30,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:34:30,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:34:30,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:34:30,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:34:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:34:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:34:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:34:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:34:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:34:30,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:34:30,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:34:30,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 06:34:30,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:34:30,714 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:34:30,715 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:34:30,715 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:34:30,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:34:30,715 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:34:30,715 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:34:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:34:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:34:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:34:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:34:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:34:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:34:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:34:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:34:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:34:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:34:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:34:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:34:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 06:34:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:34:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:34:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:34:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:34:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:34:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:34:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:34:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:34:30,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:34:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:34:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:34:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:34:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:34:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:34:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:34:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:34:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:34:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:34:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:34:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:34:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:34:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:34:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:34:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:34:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:34:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:34:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:34:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:34:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:34:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:34:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:34:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:34:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 06:34:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:34:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:34:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:34:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:34:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:34:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:34:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 06:34:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:34:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:34:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:34:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:34:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:34:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:34:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:34:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:34:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:34:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:34:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:34:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:34:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:34:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:34:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:34:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:34:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:34:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:34:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:34:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:34:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:34:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:34:31,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:34:31,799 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:34:31,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:34:31 BoogieIcfgContainer [2020-08-19 06:34:31,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:34:31,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:34:31,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:34:31,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:34:31,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:34:29" (1/3) ... [2020-08-19 06:34:31,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5508338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:34:31, skipping insertion in model container [2020-08-19 06:34:31,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:34:30" (2/3) ... [2020-08-19 06:34:31,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5508338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:34:31, skipping insertion in model container [2020-08-19 06:34:31,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:34:31" (3/3) ... [2020-08-19 06:34:31,812 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-08-19 06:34:31,821 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:34:31,829 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:34:31,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:34:31,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:34:31,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:34:31,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:34:31,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:34:31,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:34:31,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:34:31,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:34:31,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:34:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-19 06:34:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 06:34:31,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:34:31,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:34:31,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:34:31,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:34:31,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-08-19 06:34:31,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:34:31,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026810692] [2020-08-19 06:34:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:34:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:32,528 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:34:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:34:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:34:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:34:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:34:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:34:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:34:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:34:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:34:32,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026810692] [2020-08-19 06:34:32,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:34:32,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:34:32,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944250914] [2020-08-19 06:34:32,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:34:32,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:34:32,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:34:32,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:34:32,675 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-19 06:34:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:34:33,848 INFO L93 Difference]: Finished difference Result 301 states and 397 transitions. [2020-08-19 06:34:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:34:33,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 06:34:33,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:34:33,873 INFO L225 Difference]: With dead ends: 301 [2020-08-19 06:34:33,873 INFO L226 Difference]: Without dead ends: 163 [2020-08-19 06:34:33,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:34:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-19 06:34:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-19 06:34:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 06:34:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-08-19 06:34:34,001 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-08-19 06:34:34,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:34:34,002 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-08-19 06:34:34,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:34:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-08-19 06:34:34,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 06:34:34,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:34:34,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:34:34,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:34:34,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:34:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:34:34,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-08-19 06:34:34,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:34:34,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965720715] [2020-08-19 06:34:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:34:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:34,349 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:34:34,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:34:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:34:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:34:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:34:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:34:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:34,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:34:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:34:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:34:34,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965720715] [2020-08-19 06:34:34,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:34:34,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:34:34,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980583593] [2020-08-19 06:34:34,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:34:34,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:34:34,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:34:34,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:34:34,402 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 4 states. [2020-08-19 06:34:34,868 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:34:35,666 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2020-08-19 06:34:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:34:35,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 06:34:35,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:34:35,669 INFO L225 Difference]: With dead ends: 228 [2020-08-19 06:34:35,670 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 06:34:35,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:34:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 06:34:35,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-19 06:34:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 06:34:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-08-19 06:34:35,735 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-08-19 06:34:35,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:34:35,736 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-08-19 06:34:35,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:34:35,736 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-08-19 06:34:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 06:34:35,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:34:35,738 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] [2020-08-19 06:34:35,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:34:35,739 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:34:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:34:35,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-08-19 06:34:35,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:34:35,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553963246] [2020-08-19 06:34:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:34:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:36,015 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:34:36,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:34:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:36,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:34:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:34:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:34:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:36,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:34:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:34:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:34:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:34:36,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553963246] [2020-08-19 06:34:36,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:34:36,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:34:36,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093887991] [2020-08-19 06:34:36,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:34:36,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:34:36,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:34:36,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:34:36,090 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 8 states. [2020-08-19 06:34:36,454 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:34:36,761 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:37,018 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:37,258 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:37,983 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:34:39,723 INFO L93 Difference]: Finished difference Result 412 states and 515 transitions. [2020-08-19 06:34:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:34:39,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 06:34:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:34:39,729 INFO L225 Difference]: With dead ends: 412 [2020-08-19 06:34:39,730 INFO L226 Difference]: Without dead ends: 316 [2020-08-19 06:34:39,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:34:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-19 06:34:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2020-08-19 06:34:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-19 06:34:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 314 transitions. [2020-08-19 06:34:39,794 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 314 transitions. Word has length 51 [2020-08-19 06:34:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:34:39,795 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 314 transitions. [2020-08-19 06:34:39,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:34:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 314 transitions. [2020-08-19 06:34:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 06:34:39,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:34:39,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:34:39,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:34:39,798 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:34:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:34:39,799 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-08-19 06:34:39,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:34:39,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608444663] [2020-08-19 06:34:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:34:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,124 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:34:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:34:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:34:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:34:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:34:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:34:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:34:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:34:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 06:34:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:34:40,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608444663] [2020-08-19 06:34:40,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:34:40,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:34:40,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268254664] [2020-08-19 06:34:40,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:34:40,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:34:40,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:34:40,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:34:40,265 INFO L87 Difference]: Start difference. First operand 258 states and 314 transitions. Second operand 8 states. [2020-08-19 06:34:40,703 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:34:41,694 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:42,081 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:34:42,396 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:42,722 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:43,161 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:34:44,095 INFO L93 Difference]: Finished difference Result 832 states and 1087 transitions. [2020-08-19 06:34:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:34:44,098 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 06:34:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:34:44,106 INFO L225 Difference]: With dead ends: 832 [2020-08-19 06:34:44,106 INFO L226 Difference]: Without dead ends: 598 [2020-08-19 06:34:44,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:34:44,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-08-19 06:34:44,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 471. [2020-08-19 06:34:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-08-19 06:34:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 578 transitions. [2020-08-19 06:34:44,269 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 578 transitions. Word has length 57 [2020-08-19 06:34:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:34:44,270 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 578 transitions. [2020-08-19 06:34:44,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:34:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 578 transitions. [2020-08-19 06:34:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 06:34:44,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:34:44,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:34:44,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:34:44,274 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:34:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:34:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash -690329863, now seen corresponding path program 1 times [2020-08-19 06:34:44,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:34:44,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326152175] [2020-08-19 06:34:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:34:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,538 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:34:44,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:34:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:34:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:34:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:34:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:34:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:34:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:34:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 06:34:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 06:34:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:34:44,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326152175] [2020-08-19 06:34:44,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:34:44,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:34:44,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665886369] [2020-08-19 06:34:44,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:34:44,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:34:44,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:34:44,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:34:44,653 INFO L87 Difference]: Start difference. First operand 471 states and 578 transitions. Second operand 9 states. [2020-08-19 06:34:45,092 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:34:46,048 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:46,343 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:46,623 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:34:47,197 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:34:47,498 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:34:48,490 INFO L93 Difference]: Finished difference Result 1331 states and 1800 transitions. [2020-08-19 06:34:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:34:48,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 06:34:48,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:34:48,498 INFO L225 Difference]: With dead ends: 1331 [2020-08-19 06:34:48,499 INFO L226 Difference]: Without dead ends: 884 [2020-08-19 06:34:48,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 06:34:48,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-08-19 06:34:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 703. [2020-08-19 06:34:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 06:34:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 871 transitions. [2020-08-19 06:34:48,638 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 871 transitions. Word has length 61 [2020-08-19 06:34:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:34:48,639 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 871 transitions. [2020-08-19 06:34:48,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:34:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 871 transitions. [2020-08-19 06:34:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 06:34:48,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:34:48,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:34:48,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:34:48,642 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:34:48,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:34:48,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1573489665, now seen corresponding path program 1 times [2020-08-19 06:34:48,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:34:48,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389893620] [2020-08-19 06:34:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:34:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:48,928 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:34:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:34:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:48,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:34:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:34:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:34:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:48,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:34:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:34:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:34:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:34:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:34:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:34:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:34:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:34:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:34:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:34:49,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389893620] [2020-08-19 06:34:49,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:34:49,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:34:49,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081137407] [2020-08-19 06:34:49,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:34:49,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:34:49,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:34:49,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:34:49,118 INFO L87 Difference]: Start difference. First operand 703 states and 871 transitions. Second operand 9 states. [2020-08-19 06:34:49,701 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:34:50,629 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:50,865 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:34:51,179 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:51,423 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:34:53,043 INFO L93 Difference]: Finished difference Result 2338 states and 3323 transitions. [2020-08-19 06:34:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:34:53,044 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 06:34:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:34:53,057 INFO L225 Difference]: With dead ends: 2338 [2020-08-19 06:34:53,057 INFO L226 Difference]: Without dead ends: 1659 [2020-08-19 06:34:53,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:34:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-19 06:34:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1259. [2020-08-19 06:34:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-08-19 06:34:53,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1546 transitions. [2020-08-19 06:34:53,299 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1546 transitions. Word has length 83 [2020-08-19 06:34:53,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:34:53,299 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1546 transitions. [2020-08-19 06:34:53,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:34:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1546 transitions. [2020-08-19 06:34:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 06:34:53,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:34:53,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:34:53,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:34:53,304 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:34:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:34:53,304 INFO L82 PathProgramCache]: Analyzing trace with hash 547997666, now seen corresponding path program 1 times [2020-08-19 06:34:53,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:34:53,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741637551] [2020-08-19 06:34:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:34:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,553 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:34:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:34:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:34:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:34:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:34:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:34:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:34:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:34:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:34:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:34:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:34:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:34:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:34:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:34:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:34:53,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741637551] [2020-08-19 06:34:53,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:34:53,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:34:53,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606641007] [2020-08-19 06:34:53,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:34:53,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:34:53,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:34:53,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:34:53,677 INFO L87 Difference]: Start difference. First operand 1259 states and 1546 transitions. Second operand 9 states. [2020-08-19 06:34:54,736 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:54,960 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:34:55,226 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:55,472 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:34:56,566 INFO L93 Difference]: Finished difference Result 2894 states and 3849 transitions. [2020-08-19 06:34:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:34:56,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 06:34:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:34:56,579 INFO L225 Difference]: With dead ends: 2894 [2020-08-19 06:34:56,580 INFO L226 Difference]: Without dead ends: 1659 [2020-08-19 06:34:56,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:34:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-19 06:34:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1299. [2020-08-19 06:34:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-19 06:34:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1586 transitions. [2020-08-19 06:34:56,910 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1586 transitions. Word has length 83 [2020-08-19 06:34:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:34:56,911 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1586 transitions. [2020-08-19 06:34:56,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:34:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1586 transitions. [2020-08-19 06:34:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 06:34:56,915 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:34:56,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:34:56,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:34:56,915 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:34:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:34:56,916 INFO L82 PathProgramCache]: Analyzing trace with hash 570629920, now seen corresponding path program 1 times [2020-08-19 06:34:56,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:34:56,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291229506] [2020-08-19 06:34:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:34:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,184 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:34:57,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:34:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:34:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:34:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:34:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:34:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:34:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:34:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:34:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:34:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:34:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:34:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:34:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:34:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:34:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:34:57,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291229506] [2020-08-19 06:34:57,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:34:57,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:34:57,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380709690] [2020-08-19 06:34:57,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:34:57,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:34:57,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:34:57,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:34:57,322 INFO L87 Difference]: Start difference. First operand 1299 states and 1586 transitions. Second operand 11 states. [2020-08-19 06:34:58,043 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:58,268 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:58,480 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:59,130 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:59,401 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:34:59,627 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:35:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:35:00,845 INFO L93 Difference]: Finished difference Result 2592 states and 3413 transitions. [2020-08-19 06:35:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:35:00,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-19 06:35:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:35:00,856 INFO L225 Difference]: With dead ends: 2592 [2020-08-19 06:35:00,856 INFO L226 Difference]: Without dead ends: 1317 [2020-08-19 06:35:00,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:35:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-19 06:35:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1073. [2020-08-19 06:35:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-08-19 06:35:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1282 transitions. [2020-08-19 06:35:01,075 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1282 transitions. Word has length 83 [2020-08-19 06:35:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:35:01,076 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1282 transitions. [2020-08-19 06:35:01,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:35:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1282 transitions. [2020-08-19 06:35:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 06:35:01,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:35:01,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:35:01,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:35:01,080 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:35:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:35:01,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-08-19 06:35:01,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:35:01,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480650049] [2020-08-19 06:35:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:35:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:35:01,150 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:35:01,151 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:35:01,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:35:01,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:35:01 BoogieIcfgContainer [2020-08-19 06:35:01,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:35:01,194 INFO L168 Benchmark]: Toolchain (without parser) took 31471.50 ms. Allocated memory was 148.9 MB in the beginning and 637.0 MB in the end (delta: 488.1 MB). Free memory was 104.3 MB in the beginning and 163.7 MB in the end (delta: -59.4 MB). Peak memory consumption was 428.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:01,199 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 06:35:01,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.43 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 103.9 MB in the beginning and 174.9 MB in the end (delta: -71.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:01,206 INFO L168 Benchmark]: Boogie Preprocessor took 105.45 ms. Allocated memory is still 206.0 MB. Free memory was 174.9 MB in the beginning and 171.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:01,208 INFO L168 Benchmark]: RCFGBuilder took 1152.71 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 171.1 MB in the beginning and 193.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:01,208 INFO L168 Benchmark]: TraceAbstraction took 29387.22 ms. Allocated memory was 234.4 MB in the beginning and 637.0 MB in the end (delta: 402.7 MB). Free memory was 192.3 MB in the beginning and 163.7 MB in the end (delta: 28.6 MB). Peak memory consumption was 431.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:35:01,216 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 821.43 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 103.9 MB in the beginning and 174.9 MB in the end (delta: -71.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.45 ms. Allocated memory is still 206.0 MB. Free memory was 174.9 MB in the beginning and 171.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1152.71 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 171.1 MB in the beginning and 193.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29387.22 ms. Allocated memory was 234.4 MB in the beginning and 637.0 MB in the end (delta: 402.7 MB). Free memory was 192.3 MB in the beginning and 163.7 MB in the end (delta: 28.6 MB). Peak memory consumption was 431.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 910 SDtfs, 1603 SDslu, 1181 SDs, 0 SdLazy, 5348 SolverSat, 1011 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1299occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1431 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 147464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...