./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8521353bcf4bae83665566564f0550ca2d5ed2f2d2c87d1236006cfbb2433fe4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:49:48,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:49:48,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:49:48,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:49:48,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:49:48,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:49:48,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:49:48,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:49:48,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:49:48,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:49:48,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:49:48,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:49:48,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:49:48,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:49:48,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:49:48,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:49:48,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:49:48,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:49:48,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:49:48,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:49:48,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:49:48,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:49:48,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:49:48,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:49:48,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:49:48,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:49:48,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:49:48,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:49:48,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:49:48,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:49:48,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:49:48,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:49:48,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:49:48,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:49:48,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:49:48,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:49:48,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:49:48,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:49:48,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:49:48,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:49:48,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:49:48,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:49:48,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:49:48,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:49:48,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:49:48,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:49:48,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:49:48,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:49:48,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:49:48,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:49:48,766 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:49:48,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:49:48,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:49:48,768 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:49:48,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:49:48,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:49:48,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:49:48,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:49:48,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:49:48,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:49:48,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:49:48,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:49:48,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:49:48,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:49:48,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:49:48,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:49:48,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:49:48,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:49:48,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8521353bcf4bae83665566564f0550ca2d5ed2f2d2c87d1236006cfbb2433fe4 [2021-12-07 00:49:48,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:49:48,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:49:48,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:49:48,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:49:48,966 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:49:48,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2021-12-07 00:49:49,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/data/7d39fc9c4/a8ecd860440c4d72a0e4f6cfb75edc48/FLAG52e28d8f1 [2021-12-07 00:49:49,408 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:49:49,409 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2021-12-07 00:49:49,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/data/7d39fc9c4/a8ecd860440c4d72a0e4f6cfb75edc48/FLAG52e28d8f1 [2021-12-07 00:49:49,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/data/7d39fc9c4/a8ecd860440c4d72a0e4f6cfb75edc48 [2021-12-07 00:49:49,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:49:49,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:49:49,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:49:49,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:49:49,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:49:49,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dece8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49, skipping insertion in model container [2021-12-07 00:49:49,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:49:49,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:49:49,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2021-12-07 00:49:49,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:49:49,693 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:49:49,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2021-12-07 00:49:49,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:49:49,759 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:49:49,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49 WrapperNode [2021-12-07 00:49:49,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:49:49,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:49:49,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:49:49,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:49:49,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,797 INFO L137 Inliner]: procedures = 57, calls = 157, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 257 [2021-12-07 00:49:49,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:49:49,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:49:49,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:49:49,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:49:49,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:49:49,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:49:49,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:49:49,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:49:49,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (1/1) ... [2021-12-07 00:49:49,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:49:49,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:49,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:49,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:49:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:49:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-07 00:49:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-07 00:49:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-07 00:49:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-07 00:49:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-07 00:49:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-07 00:49:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-07 00:49:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-07 00:49:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-12-07 00:49:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-12-07 00:49:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-07 00:49:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-07 00:49:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-07 00:49:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-07 00:49:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:49:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-07 00:49:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-07 00:49:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:49:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:49:49,928 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:49:49,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:49:50,192 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:49:50,199 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:49:50,200 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:49:50,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:50 BoogieIcfgContainer [2021-12-07 00:49:50,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:49:50,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:49:50,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:49:50,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:49:50,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:49:49" (1/3) ... [2021-12-07 00:49:50,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4a7f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:49:50, skipping insertion in model container [2021-12-07 00:49:50,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:49" (2/3) ... [2021-12-07 00:49:50,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4a7f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:49:50, skipping insertion in model container [2021-12-07 00:49:50,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:50" (3/3) ... [2021-12-07 00:49:50,208 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2021-12-07 00:49:50,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:49:50,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:49:50,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:49:50,256 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:49:50,257 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:49:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 71 states have (on average 1.380281690140845) internal successors, (98), 80 states have internal predecessors, (98), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-07 00:49:50,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-07 00:49:50,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:50,278 INFO L514 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] [2021-12-07 00:49:50,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2046372513, now seen corresponding path program 1 times [2021-12-07 00:49:50,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:50,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6519286] [2021-12-07 00:49:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:50,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:49:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:50,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:50,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6519286] [2021-12-07 00:49:50,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6519286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:50,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:50,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:49:50,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197231658] [2021-12-07 00:49:50,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:50,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:49:50,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:49:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:49:50,484 INFO L87 Difference]: Start difference. First operand has 94 states, 71 states have (on average 1.380281690140845) internal successors, (98), 80 states have internal predecessors, (98), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:49:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:50,509 INFO L93 Difference]: Finished difference Result 180 states and 243 transitions. [2021-12-07 00:49:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:49:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-07 00:49:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:50,520 INFO L225 Difference]: With dead ends: 180 [2021-12-07 00:49:50,520 INFO L226 Difference]: Without dead ends: 85 [2021-12-07 00:49:50,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:49:50,526 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:50,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-07 00:49:50,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-12-07 00:49:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 64 states have (on average 1.3125) internal successors, (84), 72 states have internal predecessors, (84), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-07 00:49:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2021-12-07 00:49:50,566 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 23 [2021-12-07 00:49:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:50,567 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2021-12-07 00:49:50,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:49:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2021-12-07 00:49:50,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 00:49:50,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:50,570 INFO L514 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] [2021-12-07 00:49:50,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:49:50,570 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:50,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:50,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1317966796, now seen corresponding path program 1 times [2021-12-07 00:49:50,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:50,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196937062] [2021-12-07 00:49:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:50,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 00:49:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:50,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:50,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196937062] [2021-12-07 00:49:50,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196937062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:50,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:50,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:49:50,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746396232] [2021-12-07 00:49:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:50,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:49:50,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:49:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:49:50,648 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:49:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:50,661 INFO L93 Difference]: Finished difference Result 131 states and 167 transitions. [2021-12-07 00:49:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:49:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-07 00:49:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:50,663 INFO L225 Difference]: With dead ends: 131 [2021-12-07 00:49:50,663 INFO L226 Difference]: Without dead ends: 76 [2021-12-07 00:49:50,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:49:50,665 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 17 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:50,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 170 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-07 00:49:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-12-07 00:49:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 66 states have internal predecessors, (77), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-07 00:49:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2021-12-07 00:49:50,673 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 24 [2021-12-07 00:49:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:50,674 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2021-12-07 00:49:50,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:49:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2021-12-07 00:49:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-07 00:49:50,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:50,675 INFO L514 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] [2021-12-07 00:49:50,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:49:50,675 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1495379725, now seen corresponding path program 1 times [2021-12-07 00:49:50,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:50,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617134239] [2021-12-07 00:49:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:50,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:49:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:50,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:50,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617134239] [2021-12-07 00:49:50,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617134239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:50,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:50,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:49:50,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806644324] [2021-12-07 00:49:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:50,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:49:50,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:49:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:49:50,727 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:49:50,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:50,752 INFO L93 Difference]: Finished difference Result 212 states and 276 transitions. [2021-12-07 00:49:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:49:50,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-12-07 00:49:50,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:50,754 INFO L225 Difference]: With dead ends: 212 [2021-12-07 00:49:50,755 INFO L226 Difference]: Without dead ends: 143 [2021-12-07 00:49:50,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:49:50,756 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 89 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:50,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 204 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-07 00:49:50,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2021-12-07 00:49:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 105 states have (on average 1.3523809523809525) internal successors, (142), 120 states have internal predecessors, (142), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 13 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-07 00:49:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2021-12-07 00:49:50,773 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 29 [2021-12-07 00:49:50,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:50,774 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2021-12-07 00:49:50,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:49:50,774 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2021-12-07 00:49:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:49:50,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:50,775 INFO L514 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] [2021-12-07 00:49:50,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:49:50,776 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 502711413, now seen corresponding path program 1 times [2021-12-07 00:49:50,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:50,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128765877] [2021-12-07 00:49:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:50,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:49:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:50,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:50,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128765877] [2021-12-07 00:49:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128765877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:50,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:50,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:49:50,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168528381] [2021-12-07 00:49:50,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:50,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:49:50,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:49:50,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:49:50,832 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:49:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:50,908 INFO L93 Difference]: Finished difference Result 406 states and 537 transitions. [2021-12-07 00:49:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:49:50,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-07 00:49:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:50,911 INFO L225 Difference]: With dead ends: 406 [2021-12-07 00:49:50,912 INFO L226 Difference]: Without dead ends: 273 [2021-12-07 00:49:50,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:49:50,914 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 69 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:50,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 474 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-12-07 00:49:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2021-12-07 00:49:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 198 states have (on average 1.3434343434343434) internal successors, (266), 227 states have internal predecessors, (266), 40 states have call successors, (40), 28 states have call predecessors, (40), 28 states have return successors, (42), 26 states have call predecessors, (42), 40 states have call successors, (42) [2021-12-07 00:49:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 348 transitions. [2021-12-07 00:49:50,939 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 348 transitions. Word has length 32 [2021-12-07 00:49:50,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:50,939 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 348 transitions. [2021-12-07 00:49:50,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:49:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 348 transitions. [2021-12-07 00:49:50,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 00:49:50,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:50,941 INFO L514 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] [2021-12-07 00:49:50,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:49:50,942 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:50,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash -696062567, now seen corresponding path program 1 times [2021-12-07 00:49:50,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:50,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407544325] [2021-12-07 00:49:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:50,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-07 00:49:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:49:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:50,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:50,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407544325] [2021-12-07 00:49:50,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407544325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:50,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:50,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:49:50,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799284137] [2021-12-07 00:49:50,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:50,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:49:50,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:49:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:49:50,994 INFO L87 Difference]: Start difference. First operand 267 states and 348 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-07 00:49:51,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:51,174 INFO L93 Difference]: Finished difference Result 701 states and 933 transitions. [2021-12-07 00:49:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:49:51,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-12-07 00:49:51,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:51,179 INFO L225 Difference]: With dead ends: 701 [2021-12-07 00:49:51,179 INFO L226 Difference]: Without dead ends: 441 [2021-12-07 00:49:51,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:49:51,182 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 113 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:51,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 239 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:49:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-12-07 00:49:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 427. [2021-12-07 00:49:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 318 states have (on average 1.2955974842767295) internal successors, (412), 347 states have internal predecessors, (412), 56 states have call successors, (56), 52 states have call predecessors, (56), 52 states have return successors, (76), 50 states have call predecessors, (76), 56 states have call successors, (76) [2021-12-07 00:49:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 544 transitions. [2021-12-07 00:49:51,221 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 544 transitions. Word has length 36 [2021-12-07 00:49:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:51,221 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 544 transitions. [2021-12-07 00:49:51,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-07 00:49:51,221 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 544 transitions. [2021-12-07 00:49:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-07 00:49:51,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:51,223 INFO L514 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] [2021-12-07 00:49:51,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:49:51,223 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1748635237, now seen corresponding path program 1 times [2021-12-07 00:49:51,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:51,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132137780] [2021-12-07 00:49:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:51,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-07 00:49:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:49:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:49:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:51,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:51,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132137780] [2021-12-07 00:49:51,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132137780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:51,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:51,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:49:51,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057141736] [2021-12-07 00:49:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:51,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:49:51,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:51,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:49:51,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:49:51,283 INFO L87 Difference]: Start difference. First operand 427 states and 544 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:49:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:51,467 INFO L93 Difference]: Finished difference Result 953 states and 1228 transitions. [2021-12-07 00:49:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:49:51,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2021-12-07 00:49:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:51,473 INFO L225 Difference]: With dead ends: 953 [2021-12-07 00:49:51,473 INFO L226 Difference]: Without dead ends: 533 [2021-12-07 00:49:51,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:49:51,475 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 121 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:51,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 247 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:49:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-12-07 00:49:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 519. [2021-12-07 00:49:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 390 states have (on average 1.2564102564102564) internal successors, (490), 419 states have internal predecessors, (490), 64 states have call successors, (64), 52 states have call predecessors, (64), 64 states have return successors, (96), 66 states have call predecessors, (96), 64 states have call successors, (96) [2021-12-07 00:49:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 650 transitions. [2021-12-07 00:49:51,511 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 650 transitions. Word has length 47 [2021-12-07 00:49:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:51,511 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 650 transitions. [2021-12-07 00:49:51,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:49:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 650 transitions. [2021-12-07 00:49:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-07 00:49:51,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:51,513 INFO L514 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] [2021-12-07 00:49:51,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:49:51,513 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:51,513 INFO L85 PathProgramCache]: Analyzing trace with hash -245509469, now seen corresponding path program 1 times [2021-12-07 00:49:51,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:51,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51584318] [2021-12-07 00:49:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:51,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-07 00:49:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:49:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:49:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:51,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:51,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51584318] [2021-12-07 00:49:51,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51584318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:51,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:51,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:49:51,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256651161] [2021-12-07 00:49:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:51,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:49:51,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:51,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:49:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:49:51,563 INFO L87 Difference]: Start difference. First operand 519 states and 650 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:49:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:51,714 INFO L93 Difference]: Finished difference Result 1065 states and 1370 transitions. [2021-12-07 00:49:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:49:51,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2021-12-07 00:49:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:51,717 INFO L225 Difference]: With dead ends: 1065 [2021-12-07 00:49:51,717 INFO L226 Difference]: Without dead ends: 553 [2021-12-07 00:49:51,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:49:51,720 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 124 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:51,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 210 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:49:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-12-07 00:49:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 527. [2021-12-07 00:49:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 398 states have (on average 1.2512562814070352) internal successors, (498), 427 states have internal predecessors, (498), 64 states have call successors, (64), 52 states have call predecessors, (64), 64 states have return successors, (96), 66 states have call predecessors, (96), 64 states have call successors, (96) [2021-12-07 00:49:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 658 transitions. [2021-12-07 00:49:51,747 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 658 transitions. Word has length 47 [2021-12-07 00:49:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:51,748 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 658 transitions. [2021-12-07 00:49:51,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:49:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 658 transitions. [2021-12-07 00:49:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-07 00:49:51,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:51,749 INFO L514 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] [2021-12-07 00:49:51,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:49:51,749 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1063157919, now seen corresponding path program 1 times [2021-12-07 00:49:51,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:51,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048954803] [2021-12-07 00:49:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:51,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-07 00:49:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:49:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:49:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:51,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:51,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048954803] [2021-12-07 00:49:51,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048954803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:51,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:51,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:49:51,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884584980] [2021-12-07 00:49:51,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:51,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:49:51,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:49:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:49:51,797 INFO L87 Difference]: Start difference. First operand 527 states and 658 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:49:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:52,048 INFO L93 Difference]: Finished difference Result 1539 states and 2004 transitions. [2021-12-07 00:49:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:49:52,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2021-12-07 00:49:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:52,053 INFO L225 Difference]: With dead ends: 1539 [2021-12-07 00:49:52,054 INFO L226 Difference]: Without dead ends: 1019 [2021-12-07 00:49:52,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:49:52,056 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 314 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:52,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 274 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:49:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-12-07 00:49:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1007. [2021-12-07 00:49:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 758 states have (on average 1.2216358839050132) internal successors, (926), 805 states have internal predecessors, (926), 126 states have call successors, (126), 118 states have call predecessors, (126), 122 states have return successors, (212), 124 states have call predecessors, (212), 126 states have call successors, (212) [2021-12-07 00:49:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1264 transitions. [2021-12-07 00:49:52,105 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1264 transitions. Word has length 47 [2021-12-07 00:49:52,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:52,105 INFO L470 AbstractCegarLoop]: Abstraction has 1007 states and 1264 transitions. [2021-12-07 00:49:52,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:49:52,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1264 transitions. [2021-12-07 00:49:52,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-07 00:49:52,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:52,107 INFO L514 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] [2021-12-07 00:49:52,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:49:52,107 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:52,107 INFO L85 PathProgramCache]: Analyzing trace with hash 26673659, now seen corresponding path program 1 times [2021-12-07 00:49:52,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:52,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297115728] [2021-12-07 00:49:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:52,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:52,122 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:52,155 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:52,155 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 00:49:52,156 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 00:49:52,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:49:52,160 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:52,163 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:49:52,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:49:52 BoogieIcfgContainer [2021-12-07 00:49:52,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:49:52,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:49:52,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:49:52,204 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:49:52,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:50" (3/4) ... [2021-12-07 00:49:52,206 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 00:49:52,270 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:49:52,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:49:52,271 INFO L158 Benchmark]: Toolchain (without parser) took 2840.61ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 62.4MB in the beginning and 39.3MB in the end (delta: 23.1MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2021-12-07 00:49:52,271 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:49:52,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.88ms. Allocated memory is still 96.5MB. Free memory was 62.2MB in the beginning and 61.5MB in the end (delta: 730.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-07 00:49:52,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.18ms. Allocated memory is still 96.5MB. Free memory was 61.5MB in the beginning and 58.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:49:52,272 INFO L158 Benchmark]: Boogie Preprocessor took 21.27ms. Allocated memory is still 96.5MB. Free memory was 58.9MB in the beginning and 57.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:49:52,272 INFO L158 Benchmark]: RCFGBuilder took 381.54ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 57.5MB in the beginning and 92.6MB in the end (delta: -35.1MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-12-07 00:49:52,273 INFO L158 Benchmark]: TraceAbstraction took 2000.21ms. Allocated memory is still 119.5MB. Free memory was 92.0MB in the beginning and 44.5MB in the end (delta: 47.5MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2021-12-07 00:49:52,273 INFO L158 Benchmark]: Witness Printer took 66.83ms. Allocated memory is still 119.5MB. Free memory was 44.5MB in the beginning and 39.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-07 00:49:52,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.88ms. Allocated memory is still 96.5MB. Free memory was 62.2MB in the beginning and 61.5MB in the end (delta: 730.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.18ms. Allocated memory is still 96.5MB. Free memory was 61.5MB in the beginning and 58.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.27ms. Allocated memory is still 96.5MB. Free memory was 58.9MB in the beginning and 57.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.54ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 57.5MB in the beginning and 92.6MB in the end (delta: -35.1MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2000.21ms. Allocated memory is still 119.5MB. Free memory was 92.0MB in the beginning and 44.5MB in the end (delta: 47.5MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * Witness Printer took 66.83ms. Allocated memory is still 119.5MB. Free memory was 44.5MB in the beginning and 39.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 393]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L168] int pumpRunning = 0; [L169] int systemActive = 1; [L468] int cleanupTimeShifts = 4; [L762] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L544] int retValue_acc ; [L545] int tmp ; [L549] FCALL select_helpers() [L550] FCALL select_features() [L551] CALL, EXPR valid_product() [L985] int retValue_acc ; [L988] retValue_acc = 1 [L989] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L551] RET, EXPR valid_product() [L551] tmp = valid_product() [L553] COND TRUE \read(tmp) [L555] FCALL setup() [L556] CALL runTest() [L535] CALL test() [L400] int splverifierCounter ; [L401] int tmp ; [L402] int tmp___0 ; [L403] int tmp___1 ; [L404] int tmp___2 ; [L407] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L409] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L411] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L417] tmp = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L421] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L76] COND TRUE waterLevel < 2 [L77] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L421] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L427] tmp___0 = __VERIFIER_nondet_int() [L429] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L431] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L88] COND FALSE !(\read(methaneLevelCritical)) [L91] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L431] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L437] tmp___2 = __VERIFIER_nondet_int() [L439] COND TRUE \read(tmp___2) [L441] CALL startSystem() [L384] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] RET startSystem() [L456] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L176] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L183] COND TRUE \read(systemActive) [L185] CALL processEnvironment() [L231] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L234] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L249] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L205] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L208] COND TRUE ! pumpRunning [L210] CALL, EXPR isHighWaterLevel() [L328] int retValue_acc ; [L329] int tmp ; [L330] int tmp___0 ; [L334] CALL, EXPR isHighWaterSensorDry() [L138] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L141] COND FALSE !(waterLevel < 2) [L145] retValue_acc = 0 [L146] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L334] RET, EXPR isHighWaterSensorDry() [L334] tmp = isHighWaterSensorDry() [L336] COND FALSE !(\read(tmp)) [L339] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L341] retValue_acc = tmp___0 [L342] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L210] RET, EXPR isHighWaterLevel() [L210] tmp = isHighWaterLevel() [L212] COND TRUE \read(tmp) [L214] CALL activatePump() [L259] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L214] RET activatePump() [L249] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L185] RET processEnvironment() [L191] CALL __utac_acc__Specification1_spec__1() [L568] int tmp ; [L569] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L573] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] tmp = isMethaneLevelCritical() [L575] COND TRUE \read(tmp) [L577] CALL, EXPR isPumpRunning() [L283] int retValue_acc ; [L286] retValue_acc = pumpRunning [L287] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L577] RET, EXPR isPumpRunning() [L577] tmp___0 = isPumpRunning() [L579] COND TRUE \read(tmp___0) [L581] CALL __automaton_fail() [L393] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 863 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 847 mSDsluCounter, 1936 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1109 mSDsCounter, 248 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 931 IncrementalHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 248 mSolverCounterUnsat, 827 mSDtfsCounter, 931 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1007occurred in iteration=8, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 75 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 277 ConstructedInterpolants, 0 QuantifiedInterpolants, 481 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! [2021-12-07 00:49:52,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a178ffd-6b5d-4779-be7d-134b0a0dee81/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE