/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:59:34,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:59:34,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:59:34,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:59:34,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:59:34,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:59:34,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:59:34,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:59:34,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:59:34,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:59:34,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:59:34,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:59:34,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:59:34,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:59:34,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:59:34,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:59:34,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:59:34,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:59:34,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:59:34,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:59:34,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:59:34,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:59:34,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:59:34,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:59:34,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:59:34,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:59:34,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:59:34,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:59:34,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:59:34,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:59:34,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:59:34,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:59:34,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:59:34,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:59:34,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:59:34,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:59:34,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:59:34,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:59:34,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:59:34,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:59:34,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:59:34,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:59:34,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:59:34,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:59:34,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:59:34,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:59:34,486 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:59:34,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:59:34,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:59:34,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:59:34,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:59:34,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:59:34,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:59:34,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:59:34,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:59:34,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:59:34,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:59:34,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:59:34,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:59:34,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:59:34,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:59:34,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:59:34,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:59:34,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:59:34,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:59:34,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:59:34,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:59:34,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:59:34,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:59:34,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:59:34,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:59:34,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 01:59:34,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:59:34,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:59:34,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:59:34,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:59:34,789 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:59:34,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-08-22 01:59:34,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16473fb10/837fc9ec0950459f87fd3a08f0bce86b/FLAG0c30f69e5 [2020-08-22 01:59:35,402 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:59:35,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-08-22 01:59:35,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16473fb10/837fc9ec0950459f87fd3a08f0bce86b/FLAG0c30f69e5 [2020-08-22 01:59:35,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16473fb10/837fc9ec0950459f87fd3a08f0bce86b [2020-08-22 01:59:35,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:59:35,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:59:35,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:59:35,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:59:35,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:59:35,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f1cfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35, skipping insertion in model container [2020-08-22 01:59:35,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:59:35,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:59:36,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:59:36,389 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:59:36,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:59:36,515 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:59:36,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36 WrapperNode [2020-08-22 01:59:36,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:59:36,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:59:36,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:59:36,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:59:36,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (1/1) ... [2020-08-22 01:59:36,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (1/1) ... [2020-08-22 01:59:36,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (1/1) ... [2020-08-22 01:59:36,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (1/1) ... [2020-08-22 01:59:36,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (1/1) ... [2020-08-22 01:59:36,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (1/1) ... [2020-08-22 01:59:36,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (1/1) ... [2020-08-22 01:59:36,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:59:36,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:59:36,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:59:36,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:59:36,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:59:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:59:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:59:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:59:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:59:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:59:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:59:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:59:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:59:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:59:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:59:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:59:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:59:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:59:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:59:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 01:59:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:59:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:59:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:59:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:59:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:59:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:59:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:59:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:59:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:59:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:59:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:59:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:59:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:59:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:59:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:59:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:59:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:59:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:59:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:59:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:59:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:59:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:59:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:59:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:59:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:59:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:59:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:59:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:59:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:59:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:59:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:59:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:59:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:59:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:59:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:59:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:59:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:59:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:59:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 01:59:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:59:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:59:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:59:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:59:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:59:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:59:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:59:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:59:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:59:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:59:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:59:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:59:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:59:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:59:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:59:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:59:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:59:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:59:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:59:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:59:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:59:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:59:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:59:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:59:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:59:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:59:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:59:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:59:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:59:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:59:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:59:39,897 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:59:39,897 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:59:39,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:59:39 BoogieIcfgContainer [2020-08-22 01:59:39,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:59:39,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:59:39,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:59:39,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:59:39,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:59:35" (1/3) ... [2020-08-22 01:59:39,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8d4ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:59:39, skipping insertion in model container [2020-08-22 01:59:39,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:36" (2/3) ... [2020-08-22 01:59:39,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8d4ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:59:39, skipping insertion in model container [2020-08-22 01:59:39,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:59:39" (3/3) ... [2020-08-22 01:59:39,912 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-08-22 01:59:39,923 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:59:39,931 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:59:39,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:59:39,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:59:39,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:59:39,971 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:59:39,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:59:39,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:59:39,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:59:39,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:59:39,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:59:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-08-22 01:59:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 01:59:40,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:40,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:40,015 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:40,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-08-22 01:59:40,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:40,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005521070] [2020-08-22 01:59:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,726 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:40,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:59:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:59:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:40,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005521070] [2020-08-22 01:59:40,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:40,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:59:40,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093388024] [2020-08-22 01:59:40,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:59:40,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:59:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:59:40,832 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-08-22 01:59:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:41,977 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-08-22 01:59:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:59:41,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 01:59:41,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:41,994 INFO L225 Difference]: With dead ends: 278 [2020-08-22 01:59:41,994 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 01:59:41,999 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 [2020-08-22 01:59:42,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 01:59:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-08-22 01:59:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 01:59:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-22 01:59:42,085 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-08-22 01:59:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:42,085 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-22 01:59:42,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:59:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-22 01:59:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 01:59:42,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:42,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:42,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:59:42,090 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:42,090 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-08-22 01:59:42,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:42,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88245457] [2020-08-22 01:59:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,423 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:59:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:59:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:42,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88245457] [2020-08-22 01:59:42,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:42,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:59:42,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502897865] [2020-08-22 01:59:42,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:59:42,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:59:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:59:42,477 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-08-22 01:59:42,942 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:43,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:43,603 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-08-22 01:59:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:59:43,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 01:59:43,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:43,607 INFO L225 Difference]: With dead ends: 198 [2020-08-22 01:59:43,607 INFO L226 Difference]: Without dead ends: 135 [2020-08-22 01:59:43,609 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 [2020-08-22 01:59:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-22 01:59:43,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-08-22 01:59:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-22 01:59:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-08-22 01:59:43,641 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-08-22 01:59:43,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:43,642 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-08-22 01:59:43,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:59:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-08-22 01:59:43,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 01:59:43,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:43,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:43,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:59:43,645 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-08-22 01:59:43,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:43,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291902025] [2020-08-22 01:59:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:43,991 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:44,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:59:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:44,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:59:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:44,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291902025] [2020-08-22 01:59:44,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:44,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:59:44,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562958496] [2020-08-22 01:59:44,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:59:44,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:44,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:59:44,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:59:44,083 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 8 states. [2020-08-22 01:59:44,462 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:44,785 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:45,061 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:45,295 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:46,026 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:47,414 INFO L93 Difference]: Finished difference Result 378 states and 466 transitions. [2020-08-22 01:59:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:59:47,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 01:59:47,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:47,421 INFO L225 Difference]: With dead ends: 378 [2020-08-22 01:59:47,422 INFO L226 Difference]: Without dead ends: 293 [2020-08-22 01:59:47,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:59:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-22 01:59:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2020-08-22 01:59:47,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 01:59:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2020-08-22 01:59:47,492 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 52 [2020-08-22 01:59:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:47,492 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2020-08-22 01:59:47,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:59:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2020-08-22 01:59:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 01:59:47,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:47,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:47,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:59:47,496 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:47,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:47,496 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-08-22 01:59:47,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:47,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802090917] [2020-08-22 01:59:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,776 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:47,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:59:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:59:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:59:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:47,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802090917] [2020-08-22 01:59:47,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:47,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:59:47,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544830565] [2020-08-22 01:59:47,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:59:47,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:47,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:59:47,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:59:47,857 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand 8 states. [2020-08-22 01:59:48,324 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:49,427 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:49,724 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:49,986 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:50,204 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:50,555 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:51,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:51,273 INFO L93 Difference]: Finished difference Result 713 states and 925 transitions. [2020-08-22 01:59:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:59:51,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 01:59:51,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:51,281 INFO L225 Difference]: With dead ends: 713 [2020-08-22 01:59:51,281 INFO L226 Difference]: Without dead ends: 517 [2020-08-22 01:59:51,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:59:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-08-22 01:59:51,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 395. [2020-08-22 01:59:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-22 01:59:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 474 transitions. [2020-08-22 01:59:51,400 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 474 transitions. Word has length 57 [2020-08-22 01:59:51,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:51,401 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 474 transitions. [2020-08-22 01:59:51,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:59:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 474 transitions. [2020-08-22 01:59:51,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 01:59:51,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:51,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:51,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:59:51,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:51,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:51,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1256704497, now seen corresponding path program 1 times [2020-08-22 01:59:51,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:51,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600031623] [2020-08-22 01:59:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,715 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:59:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:59:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:59:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:51,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600031623] [2020-08-22 01:59:51,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:51,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:59:51,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892029861] [2020-08-22 01:59:51,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:59:51,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:51,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:59:51,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:59:51,817 INFO L87 Difference]: Start difference. First operand 395 states and 474 transitions. Second operand 9 states. [2020-08-22 01:59:52,289 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:53,263 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:53,562 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:53,804 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:54,286 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:54,578 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:55,476 INFO L93 Difference]: Finished difference Result 1150 states and 1524 transitions. [2020-08-22 01:59:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:59:55,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 01:59:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:55,484 INFO L225 Difference]: With dead ends: 1150 [2020-08-22 01:59:55,484 INFO L226 Difference]: Without dead ends: 779 [2020-08-22 01:59:55,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:59:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-08-22 01:59:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 615. [2020-08-22 01:59:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-08-22 01:59:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-08-22 01:59:55,607 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 61 [2020-08-22 01:59:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:55,608 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-08-22 01:59:55,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:59:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-08-22 01:59:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 01:59:55,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:55,610 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] [2020-08-22 01:59:55,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:59:55,611 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash 148740965, now seen corresponding path program 1 times [2020-08-22 01:59:55,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:55,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903079319] [2020-08-22 01:59:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,881 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:59:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:56,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:59:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:59:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 01:59:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 01:59:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:56,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903079319] [2020-08-22 01:59:56,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:56,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:59:56,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147171506] [2020-08-22 01:59:56,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:59:56,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:56,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:59:56,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:59:56,034 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 9 states. [2020-08-22 01:59:56,485 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:57,375 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:57,625 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:59:57,882 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:58,156 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:59,844 INFO L93 Difference]: Finished difference Result 2147 states and 3042 transitions. [2020-08-22 01:59:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:59:59,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-22 01:59:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:59,863 INFO L225 Difference]: With dead ends: 2147 [2020-08-22 01:59:59,864 INFO L226 Difference]: Without dead ends: 1556 [2020-08-22 01:59:59,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:59:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2020-08-22 02:00:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1159. [2020-08-22 02:00:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-22 02:00:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1412 transitions. [2020-08-22 02:00:00,147 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1412 transitions. Word has length 79 [2020-08-22 02:00:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:00,148 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1412 transitions. [2020-08-22 02:00:00,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:00:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1412 transitions. [2020-08-22 02:00:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 02:00:00,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:00,153 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] [2020-08-22 02:00:00,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:00:00,153 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:00,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2136122490, now seen corresponding path program 1 times [2020-08-22 02:00:00,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:00,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466412717] [2020-08-22 02:00:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,410 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:00:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:00:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:00:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:00:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 02:00:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 02:00:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:00,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466412717] [2020-08-22 02:00:00,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:00,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:00:00,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260362539] [2020-08-22 02:00:00,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:00:00,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:00,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:00:00,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:00:00,527 INFO L87 Difference]: Start difference. First operand 1159 states and 1412 transitions. Second operand 9 states. [2020-08-22 02:00:01,785 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:02,056 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:00:02,337 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:02,590 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:03,571 INFO L93 Difference]: Finished difference Result 2704 states and 3585 transitions. [2020-08-22 02:00:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:00:03,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-22 02:00:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:03,583 INFO L225 Difference]: With dead ends: 2704 [2020-08-22 02:00:03,583 INFO L226 Difference]: Without dead ends: 1569 [2020-08-22 02:00:03,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:00:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-08-22 02:00:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1199. [2020-08-22 02:00:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2020-08-22 02:00:03,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1452 transitions. [2020-08-22 02:00:03,884 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1452 transitions. Word has length 79 [2020-08-22 02:00:03,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:03,885 INFO L479 AbstractCegarLoop]: Abstraction has 1199 states and 1452 transitions. [2020-08-22 02:00:03,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:00:03,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1452 transitions. [2020-08-22 02:00:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 02:00:03,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:03,890 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] [2020-08-22 02:00:03,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:00:03,890 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1649371716, now seen corresponding path program 1 times [2020-08-22 02:00:03,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:03,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176790601] [2020-08-22 02:00:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,223 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:04,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:00:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:00:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:00:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:00:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 02:00:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 02:00:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:04,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176790601] [2020-08-22 02:00:04,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:04,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:00:04,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014375937] [2020-08-22 02:00:04,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:00:04,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:04,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:00:04,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:00:04,355 INFO L87 Difference]: Start difference. First operand 1199 states and 1452 transitions. Second operand 11 states. [2020-08-22 02:00:04,982 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:05,232 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:05,504 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:06,252 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:06,535 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:06,789 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:07,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:07,685 INFO L93 Difference]: Finished difference Result 2398 states and 3135 transitions. [2020-08-22 02:00:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:00:07,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-22 02:00:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:07,693 INFO L225 Difference]: With dead ends: 2398 [2020-08-22 02:00:07,693 INFO L226 Difference]: Without dead ends: 1223 [2020-08-22 02:00:07,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:00:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2020-08-22 02:00:07,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 973. [2020-08-22 02:00:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-08-22 02:00:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1148 transitions. [2020-08-22 02:00:07,876 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1148 transitions. Word has length 79 [2020-08-22 02:00:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:07,878 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1148 transitions. [2020-08-22 02:00:07,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:00:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1148 transitions. [2020-08-22 02:00:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 02:00:07,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:07,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:00:07,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:00:07,881 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:07,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:07,882 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-08-22 02:00:07,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:07,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782501886] [2020-08-22 02:00:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:00:07,942 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:00:07,942 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:00:07,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:00:07,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:00:07 BoogieIcfgContainer [2020-08-22 02:00:07,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:00:08,000 INFO L168 Benchmark]: Toolchain (without parser) took 32156.71 ms. Allocated memory was 141.0 MB in the beginning and 650.1 MB in the end (delta: 509.1 MB). Free memory was 101.5 MB in the beginning and 414.2 MB in the end (delta: -312.7 MB). Peak memory consumption was 196.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:08,001 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:00:08,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.19 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 171.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:08,002 INFO L168 Benchmark]: Boogie Preprocessor took 88.47 ms. Allocated memory is still 203.9 MB. Free memory was 171.3 MB in the beginning and 166.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:08,003 INFO L168 Benchmark]: RCFGBuilder took 3297.80 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 166.9 MB in the beginning and 192.1 MB in the end (delta: -25.1 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:08,006 INFO L168 Benchmark]: TraceAbstraction took 28093.37 ms. Allocated memory was 233.3 MB in the beginning and 650.1 MB in the end (delta: 416.8 MB). Free memory was 192.1 MB in the beginning and 414.2 MB in the end (delta: -222.1 MB). Peak memory consumption was 194.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:08,016 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.19 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 171.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.47 ms. Allocated memory is still 203.9 MB. Free memory was 171.3 MB in the beginning and 166.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3297.80 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 166.9 MB in the beginning and 192.1 MB in the end (delta: -25.1 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28093.37 ms. Allocated memory was 233.3 MB in the beginning and 650.1 MB in the end (delta: 416.8 MB). Free memory was 192.1 MB in the beginning and 414.2 MB in the end (delta: -222.1 MB). Peak memory consumption was 194.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___2)) [L380] tmp___1 = __VERIFIER_nondet_int() [L382] COND FALSE !(\read(tmp___1)) [L391] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; [L200] CALL, EXPR isHighWaterSensorDry() [L319] int retValue_acc ; [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); [L200] RET, EXPR isHighWaterSensorDry() [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) [L106] CALL activatePump() [L125] pumpRunning = 1 [L106] RET activatePump() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification1_spec__1() [L808] int tmp ; [L809] int tmp___0 ; [L813] CALL, EXPR isMethaneLevelCritical() [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L813] RET, EXPR isMethaneLevelCritical() [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) [L817] CALL, EXPR isPumpRunning() [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); [L817] RET, EXPR isPumpRunning() [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) [L821] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 834 SDtfs, 1659 SDslu, 1096 SDs, 0 SdLazy, 4889 SolverSat, 1141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1199occurred 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: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1435 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 583 NumberOfCodeBlocks, 583 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 492 ConstructedInterpolants, 0 QuantifiedInterpolants, 143100 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...