./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.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_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45558e1c10008e5b16efe572a84fcf92b08797f54d586c51d45827b7e38254a6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:19:27,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:19:27,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:19:27,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:19:27,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:19:27,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:19:27,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:19:27,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:19:27,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:19:27,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:19:27,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:19:27,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:19:27,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:19:27,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:19:27,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:19:27,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:19:27,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:19:27,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:19:27,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:19:27,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:19:27,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:19:27,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:19:27,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:19:27,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:19:27,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:19:27,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:19:27,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:19:27,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:19:27,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:19:27,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:19:27,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:19:27,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:19:27,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:19:27,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:19:27,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:19:27,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:19:27,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:19:27,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:19:27,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:19:27,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:19:27,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:19:27,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:19:27,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:19:27,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:19:27,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:19:27,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:19:27,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:19:27,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:19:27,875 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:19:27,875 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:19:27,875 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:19:27,875 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:19:27,876 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:19:27,877 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:19:27,877 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:19:27,877 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:19:27,877 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:19:27,878 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:19:27,878 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:19:27,878 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:19:27,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:19:27,879 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:19:27,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:19:27,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:19:27,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:19:27,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:19:27,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:19:27,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:19:27,882 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:19:27,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:19:27,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:19:27,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:19:27,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:19:27,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:19:27,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:19:27,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:19:27,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:19:27,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:19:27,885 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:19:27,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:19:27,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:19:27,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:19:27,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:19:27,886 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45558e1c10008e5b16efe572a84fcf92b08797f54d586c51d45827b7e38254a6 [2021-11-25 20:19:28,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:19:28,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:19:28,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:19:28,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:19:28,211 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:19:28,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c [2021-11-25 20:19:28,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/data/2487ecde5/88194d0ae4644c17b3bf54c3f10e6da2/FLAG1851ebdb0 [2021-11-25 20:19:28,792 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:19:28,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c [2021-11-25 20:19:28,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/data/2487ecde5/88194d0ae4644c17b3bf54c3f10e6da2/FLAG1851ebdb0 [2021-11-25 20:19:29,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/data/2487ecde5/88194d0ae4644c17b3bf54c3f10e6da2 [2021-11-25 20:19:29,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:19:29,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:19:29,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:19:29,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:19:29,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:19:29,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc8134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29, skipping insertion in model container [2021-11-25 20:19:29,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:19:29,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:19:29,446 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_fd799c87-362a-43a7-ad42-5514a6e22423/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c[9333,9346] [2021-11-25 20:19:29,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:19:29,526 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:19:29,588 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_fd799c87-362a-43a7-ad42-5514a6e22423/sv-benchmarks/c/product-lines/minepump_spec4_productSimulator.cil.c[9333,9346] [2021-11-25 20:19:29,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:19:29,677 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:19:29,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29 WrapperNode [2021-11-25 20:19:29,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:19:29,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:19:29,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:19:29,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:19:29,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,752 INFO L137 Inliner]: procedures = 63, calls = 177, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 351 [2021-11-25 20:19:29,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:19:29,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:19:29,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:19:29,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:19:29,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:19:29,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:19:29,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:19:29,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:19:29,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (1/1) ... [2021-11-25 20:19:29,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:19:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:29,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:19:29,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:19:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:19:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2021-11-25 20:19:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2021-11-25 20:19:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-25 20:19:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-25 20:19:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-25 20:19:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-25 20:19:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2021-11-25 20:19:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2021-11-25 20:19:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-25 20:19:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-25 20:19:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2021-11-25 20:19:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2021-11-25 20:19:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2021-11-25 20:19:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2021-11-25 20:19:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-11-25 20:19:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-11-25 20:19:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-25 20:19:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-25 20:19:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:19:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-25 20:19:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-25 20:19:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-25 20:19:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-25 20:19:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:19:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:19:29,991 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:19:29,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:19:30,381 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:19:30,456 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:19:30,460 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 20:19:30,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:30 BoogieIcfgContainer [2021-11-25 20:19:30,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:19:30,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:19:30,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:19:30,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:19:30,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:19:29" (1/3) ... [2021-11-25 20:19:30,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f93472f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:30, skipping insertion in model container [2021-11-25 20:19:30,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:29" (2/3) ... [2021-11-25 20:19:30,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f93472f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:30, skipping insertion in model container [2021-11-25 20:19:30,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:30" (3/3) ... [2021-11-25 20:19:30,476 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_productSimulator.cil.c [2021-11-25 20:19:30,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:19:30,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:19:30,553 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:19:30,563 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=FINITE_AUTOMATA, 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 [2021-11-25 20:19:30,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:19:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 78 states have internal predecessors, (88), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-25 20:19:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 20:19:30,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:30,609 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:30,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash 95214816, now seen corresponding path program 1 times [2021-11-25 20:19:30,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:30,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982009161] [2021-11-25 20:19:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:30,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:19:30,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:30,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982009161] [2021-11-25 20:19:30,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982009161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:30,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:30,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:19:30,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753004396] [2021-11-25 20:19:30,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:30,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:19:30,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:30,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:19:30,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:19:30,910 INFO L87 Difference]: Start difference. First operand has 103 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 78 states have internal predecessors, (88), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:19:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:30,987 INFO L93 Difference]: Finished difference Result 190 states and 270 transitions. [2021-11-25 20:19:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:19:30,989 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 36 [2021-11-25 20:19:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:31,001 INFO L225 Difference]: With dead ends: 190 [2021-11-25 20:19:31,001 INFO L226 Difference]: Without dead ends: 98 [2021-11-25 20:19:31,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:19:31,013 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:31,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:19:31,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-25 20:19:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-11-25 20:19:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 74 states have internal predecessors, (80), 28 states have call successors, (28), 11 states have call predecessors, (28), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-25 20:19:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 135 transitions. [2021-11-25 20:19:31,099 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 135 transitions. Word has length 36 [2021-11-25 20:19:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:31,103 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 135 transitions. [2021-11-25 20:19:31,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:19:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 135 transitions. [2021-11-25 20:19:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 20:19:31,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:31,108 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:31,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:19:31,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1891052017, now seen corresponding path program 1 times [2021-11-25 20:19:31,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:31,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010549153] [2021-11-25 20:19:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:31,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:19:31,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:31,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010549153] [2021-11-25 20:19:31,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010549153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:31,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:31,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:31,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441272346] [2021-11-25 20:19:31,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:31,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:31,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:31,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:31,308 INFO L87 Difference]: Start difference. First operand 98 states and 135 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:19:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:31,402 INFO L93 Difference]: Finished difference Result 153 states and 211 transitions. [2021-11-25 20:19:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:19:31,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2021-11-25 20:19:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:31,410 INFO L225 Difference]: With dead ends: 153 [2021-11-25 20:19:31,411 INFO L226 Difference]: Without dead ends: 90 [2021-11-25 20:19:31,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:31,416 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 16 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:31,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 194 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:19:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-25 20:19:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-25 20:19:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 69 states have internal predecessors, (74), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 20 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-25 20:19:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 124 transitions. [2021-11-25 20:19:31,441 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 124 transitions. Word has length 37 [2021-11-25 20:19:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:31,443 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 124 transitions. [2021-11-25 20:19:31,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:19:31,444 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 124 transitions. [2021-11-25 20:19:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 20:19:31,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:31,450 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:31,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:19:31,450 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash 984782066, now seen corresponding path program 1 times [2021-11-25 20:19:31,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254837730] [2021-11-25 20:19:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:31,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:19:31,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:31,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254837730] [2021-11-25 20:19:31,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254837730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:31,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:31,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:31,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042325196] [2021-11-25 20:19:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:31,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:31,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:31,643 INFO L87 Difference]: Start difference. First operand 90 states and 124 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:19:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:31,878 INFO L93 Difference]: Finished difference Result 258 states and 358 transitions. [2021-11-25 20:19:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:31,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2021-11-25 20:19:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:31,882 INFO L225 Difference]: With dead ends: 258 [2021-11-25 20:19:31,882 INFO L226 Difference]: Without dead ends: 184 [2021-11-25 20:19:31,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:19:31,885 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 169 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:31,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 348 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-25 20:19:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2021-11-25 20:19:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 140 states have internal predecessors, (154), 39 states have call successors, (39), 20 states have call predecessors, (39), 23 states have return successors, (44), 38 states have call predecessors, (44), 39 states have call successors, (44) [2021-11-25 20:19:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2021-11-25 20:19:31,914 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 40 [2021-11-25 20:19:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:31,915 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2021-11-25 20:19:31,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:19:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2021-11-25 20:19:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 20:19:31,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:31,917 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:31,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:19:31,917 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:31,917 INFO L85 PathProgramCache]: Analyzing trace with hash -57611138, now seen corresponding path program 1 times [2021-11-25 20:19:31,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:31,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188999799] [2021-11-25 20:19:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:31,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:19:32,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:32,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188999799] [2021-11-25 20:19:32,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188999799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:32,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:32,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:19:32,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628294372] [2021-11-25 20:19:32,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:32,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:19:32,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:32,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:19:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:32,062 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-25 20:19:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:32,751 INFO L93 Difference]: Finished difference Result 395 states and 541 transitions. [2021-11-25 20:19:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:19:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2021-11-25 20:19:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:32,756 INFO L225 Difference]: With dead ends: 395 [2021-11-25 20:19:32,756 INFO L226 Difference]: Without dead ends: 318 [2021-11-25 20:19:32,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:19:32,759 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 314 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:32,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 539 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:19:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-25 20:19:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 271. [2021-11-25 20:19:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 179 states have (on average 1.312849162011173) internal successors, (235), 213 states have internal predecessors, (235), 54 states have call successors, (54), 31 states have call predecessors, (54), 37 states have return successors, (64), 58 states have call predecessors, (64), 54 states have call successors, (64) [2021-11-25 20:19:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 353 transitions. [2021-11-25 20:19:32,797 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 353 transitions. Word has length 43 [2021-11-25 20:19:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:32,798 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 353 transitions. [2021-11-25 20:19:32,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-25 20:19:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 353 transitions. [2021-11-25 20:19:32,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 20:19:32,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:32,801 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:32,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:19:32,802 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:32,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 226918611, now seen corresponding path program 1 times [2021-11-25 20:19:32,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:32,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122672447] [2021-11-25 20:19:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:32,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:19:32,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:32,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122672447] [2021-11-25 20:19:32,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122672447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:32,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:32,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:32,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749565791] [2021-11-25 20:19:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:32,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:32,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:32,871 INFO L87 Difference]: Start difference. First operand 271 states and 353 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:19:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:32,955 INFO L93 Difference]: Finished difference Result 601 states and 788 transitions. [2021-11-25 20:19:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:19:32,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2021-11-25 20:19:32,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:32,964 INFO L225 Difference]: With dead ends: 601 [2021-11-25 20:19:32,964 INFO L226 Difference]: Without dead ends: 346 [2021-11-25 20:19:32,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:32,966 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 104 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:32,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 140 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:19:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-25 20:19:33,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 335. [2021-11-25 20:19:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 227 states have (on average 1.3215859030837005) internal successors, (300), 266 states have internal predecessors, (300), 62 states have call successors, (62), 39 states have call predecessors, (62), 45 states have return successors, (77), 66 states have call predecessors, (77), 62 states have call successors, (77) [2021-11-25 20:19:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 439 transitions. [2021-11-25 20:19:33,055 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 439 transitions. Word has length 72 [2021-11-25 20:19:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:33,056 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 439 transitions. [2021-11-25 20:19:33,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:19:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 439 transitions. [2021-11-25 20:19:33,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 20:19:33,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:33,066 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:33,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:19:33,067 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1342599677, now seen corresponding path program 1 times [2021-11-25 20:19:33,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:33,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443289700] [2021-11-25 20:19:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:33,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:19:33,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:33,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443289700] [2021-11-25 20:19:33,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443289700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:33,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:33,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:19:33,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311123708] [2021-11-25 20:19:33,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:33,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:19:33,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:19:33,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:19:33,158 INFO L87 Difference]: Start difference. First operand 335 states and 439 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:19:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:33,310 INFO L93 Difference]: Finished difference Result 674 states and 888 transitions. [2021-11-25 20:19:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:19:33,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 80 [2021-11-25 20:19:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:33,316 INFO L225 Difference]: With dead ends: 674 [2021-11-25 20:19:33,316 INFO L226 Difference]: Without dead ends: 355 [2021-11-25 20:19:33,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:19:33,318 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 150 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:33,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 204 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:19:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-25 20:19:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 344. [2021-11-25 20:19:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 233 states have (on average 1.3133047210300428) internal successors, (306), 272 states have internal predecessors, (306), 65 states have call successors, (65), 42 states have call predecessors, (65), 45 states have return successors, (80), 66 states have call predecessors, (80), 65 states have call successors, (80) [2021-11-25 20:19:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 451 transitions. [2021-11-25 20:19:33,353 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 451 transitions. Word has length 80 [2021-11-25 20:19:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:33,354 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 451 transitions. [2021-11-25 20:19:33,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:19:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 451 transitions. [2021-11-25 20:19:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 20:19:33,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:33,358 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:33,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:19:33,359 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -121839512, now seen corresponding path program 1 times [2021-11-25 20:19:33,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:33,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887645866] [2021-11-25 20:19:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:33,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:19:33,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:33,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887645866] [2021-11-25 20:19:33,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887645866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:33,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:33,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:33,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064829658] [2021-11-25 20:19:33,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:33,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:33,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:33,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:33,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:33,445 INFO L87 Difference]: Start difference. First operand 344 states and 451 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:19:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:33,529 INFO L93 Difference]: Finished difference Result 628 states and 845 transitions. [2021-11-25 20:19:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:19:33,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2021-11-25 20:19:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:33,535 INFO L225 Difference]: With dead ends: 628 [2021-11-25 20:19:33,535 INFO L226 Difference]: Without dead ends: 407 [2021-11-25 20:19:33,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:33,540 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 58 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:33,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 265 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:19:33,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-25 20:19:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2021-11-25 20:19:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 271 states have (on average 1.3099630996309963) internal successors, (355), 315 states have internal predecessors, (355), 75 states have call successors, (75), 49 states have call predecessors, (75), 52 states have return successors, (101), 76 states have call predecessors, (101), 75 states have call successors, (101) [2021-11-25 20:19:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 531 transitions. [2021-11-25 20:19:33,587 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 531 transitions. Word has length 76 [2021-11-25 20:19:33,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:33,587 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 531 transitions. [2021-11-25 20:19:33,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:19:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 531 transitions. [2021-11-25 20:19:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 20:19:33,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:33,590 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:33,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:19:33,590 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1063160965, now seen corresponding path program 1 times [2021-11-25 20:19:33,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:33,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982897282] [2021-11-25 20:19:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:33,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:19:33,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:33,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982897282] [2021-11-25 20:19:33,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982897282] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:19:33,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231437286] [2021-11-25 20:19:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:33,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:19:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:33,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:19:33,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:19:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:33,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 20:19:33,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 20:19:34,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:19:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 20:19:35,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231437286] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:19:35,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [632038892] [2021-11-25 20:19:35,496 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2021-11-25 20:19:35,496 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:19:35,502 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:19:35,507 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:19:35,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:19:54,442 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 79 for LOIs [2021-11-25 20:19:54,732 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__methaneAlarm with input of size 68 for LOIs [2021-11-25 20:19:54,816 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 80 for LOIs [2021-11-25 20:19:54,830 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__lowWaterSensor with input of size 61 for LOIs [2021-11-25 20:19:55,039 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__before__methaneQuery with input of size 58 for LOIs [2021-11-25 20:19:55,046 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 62 for LOIs [2021-11-25 20:19:55,054 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:20:11,023 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7833#(and (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483647) (<= |old(~waterLevel~0)| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~2#1|) (<= 0 (+ ~__SELECTED_FEATURE_lowWaterSensor~0 2147483648)) (<= ~__SELECTED_FEATURE_lowWaterSensor~0 2147483647) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483648)) (<= 0 (+ ~__SELECTED_FEATURE_methaneQuery~0 2147483648)) (<= ~__SELECTED_FEATURE_highWaterSensor~0 2147483647) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (<= 0 (+ ~__SELECTED_FEATURE_methaneAlarm~0 2147483648)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| |timeShift_getWaterLevel_#res#1|) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_startCommand~0)) (<= ~__SELECTED_FEATURE_methaneQuery~0 2147483647) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_highWaterSensor~0)) (= ~__GUIDSL_ROOT_PRODUCTION~0 1) (<= ~__SELECTED_FEATURE_startCommand~0 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= ~head~0.base 0) (<= ~__SELECTED_FEATURE_methaneAlarm~0 2147483647) (= |#NULL.offset| 0) (= ~__SELECTED_FEATURE_base~0 1) (<= 0 (+ ~__SELECTED_FEATURE_stopCommand~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~9#1| ~waterLevel~0) (<= ~__SELECTED_FEATURE_stopCommand~0 2147483647) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~2#1|))' at error location [2021-11-25 20:20:11,023 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:20:11,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:20:11,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 15 [2021-11-25 20:20:11,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396142180] [2021-11-25 20:20:11,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:20:11,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 20:20:11,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:11,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 20:20:11,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3529, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 20:20:11,027 INFO L87 Difference]: Start difference. First operand 399 states and 531 transitions. Second operand has 15 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2021-11-25 20:20:12,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:12,595 INFO L93 Difference]: Finished difference Result 773 states and 1050 transitions. [2021-11-25 20:20:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 20:20:12,596 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 79 [2021-11-25 20:20:12,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:12,605 INFO L225 Difference]: With dead ends: 773 [2021-11-25 20:20:12,605 INFO L226 Difference]: Without dead ends: 615 [2021-11-25 20:20:12,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2935 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=764, Invalid=5716, Unknown=0, NotChecked=0, Total=6480 [2021-11-25 20:20:12,614 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 740 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:12,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 480 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:20:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-25 20:20:12,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 579. [2021-11-25 20:20:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 397 states have (on average 1.2871536523929472) internal successors, (511), 455 states have internal predecessors, (511), 101 states have call successors, (101), 70 states have call predecessors, (101), 80 states have return successors, (135), 112 states have call predecessors, (135), 101 states have call successors, (135) [2021-11-25 20:20:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 747 transitions. [2021-11-25 20:20:12,670 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 747 transitions. Word has length 79 [2021-11-25 20:20:12,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:12,672 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 747 transitions. [2021-11-25 20:20:12,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2021-11-25 20:20:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 747 transitions. [2021-11-25 20:20:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 20:20:12,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:12,680 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:20:12,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:20:12,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:12,907 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1158331010, now seen corresponding path program 1 times [2021-11-25 20:20:12,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:12,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655379298] [2021-11-25 20:20:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:12,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:20:12,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:12,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655379298] [2021-11-25 20:20:12,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655379298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:12,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:20:12,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:20:12,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769930146] [2021-11-25 20:20:12,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:12,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:20:12,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:12,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:20:12,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:20:12,971 INFO L87 Difference]: Start difference. First operand 579 states and 747 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:20:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:13,077 INFO L93 Difference]: Finished difference Result 1667 states and 2172 transitions. [2021-11-25 20:20:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:20:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 84 [2021-11-25 20:20:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:13,085 INFO L225 Difference]: With dead ends: 1667 [2021-11-25 20:20:13,085 INFO L226 Difference]: Without dead ends: 1104 [2021-11-25 20:20:13,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:20:13,091 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 83 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:13,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 230 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:20:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-11-25 20:20:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1102. [2021-11-25 20:20:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 763 states have (on average 1.2883355176933158) internal successors, (983), 864 states have internal predecessors, (983), 180 states have call successors, (180), 138 states have call predecessors, (180), 158 states have return successors, (256), 196 states have call predecessors, (256), 180 states have call successors, (256) [2021-11-25 20:20:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1419 transitions. [2021-11-25 20:20:13,175 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1419 transitions. Word has length 84 [2021-11-25 20:20:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:13,176 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1419 transitions. [2021-11-25 20:20:13,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:20:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1419 transitions. [2021-11-25 20:20:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 20:20:13,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:13,180 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:20:13,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:20:13,180 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:13,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1646439614, now seen corresponding path program 1 times [2021-11-25 20:20:13,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:13,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628718334] [2021-11-25 20:20:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:13,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 20:20:13,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:13,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628718334] [2021-11-25 20:20:13,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628718334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:20:13,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948416324] [2021-11-25 20:20:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:13,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:13,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:20:13,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:20:13,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:20:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:13,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:20:13,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:20:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:20:13,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:20:13,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948416324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:13,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:20:13,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:20:13,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934546710] [2021-11-25 20:20:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:13,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:20:13,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:13,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:20:13,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:20:13,535 INFO L87 Difference]: Start difference. First operand 1102 states and 1419 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:20:13,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:13,716 INFO L93 Difference]: Finished difference Result 3185 states and 4233 transitions. [2021-11-25 20:20:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:20:13,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 84 [2021-11-25 20:20:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:13,732 INFO L225 Difference]: With dead ends: 3185 [2021-11-25 20:20:13,732 INFO L226 Difference]: Without dead ends: 2101 [2021-11-25 20:20:13,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:20:13,740 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 67 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:13,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 242 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:20:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-11-25 20:20:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2083. [2021-11-25 20:20:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1451 states have (on average 1.2873880082701585) internal successors, (1868), 1623 states have internal predecessors, (1868), 324 states have call successors, (324), 273 states have call predecessors, (324), 307 states have return successors, (526), 338 states have call predecessors, (526), 324 states have call successors, (526) [2021-11-25 20:20:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2718 transitions. [2021-11-25 20:20:13,894 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2718 transitions. Word has length 84 [2021-11-25 20:20:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:13,894 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2718 transitions. [2021-11-25 20:20:13,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:20:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2718 transitions. [2021-11-25 20:20:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 20:20:13,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:13,900 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:20:13,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:20:14,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 20:20:14,127 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1906473638, now seen corresponding path program 1 times [2021-11-25 20:20:14,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:14,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433055502] [2021-11-25 20:20:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:14,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-25 20:20:14,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:14,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433055502] [2021-11-25 20:20:14,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433055502] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:20:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112467705] [2021-11-25 20:20:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:14,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:14,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:20:14,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:20:14,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:20:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:14,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:20:14,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:20:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:20:14,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:20:14,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112467705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:14,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:20:14,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:20:14,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374516171] [2021-11-25 20:20:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:14,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:20:14,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:20:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:20:14,456 INFO L87 Difference]: Start difference. First operand 2083 states and 2718 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 20:20:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:14,673 INFO L93 Difference]: Finished difference Result 4610 states and 6259 transitions. [2021-11-25 20:20:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:20:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 85 [2021-11-25 20:20:14,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:14,693 INFO L225 Difference]: With dead ends: 4610 [2021-11-25 20:20:14,694 INFO L226 Difference]: Without dead ends: 2547 [2021-11-25 20:20:14,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:20:14,701 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 70 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:14,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 213 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:20:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-11-25 20:20:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2547. [2021-11-25 20:20:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 1803 states have (on average 1.2756516916250693) internal successors, (2300), 1975 states have internal predecessors, (2300), 372 states have call successors, (372), 345 states have call predecessors, (372), 371 states have return successors, (718), 378 states have call predecessors, (718), 372 states have call successors, (718) [2021-11-25 20:20:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3390 transitions. [2021-11-25 20:20:14,905 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3390 transitions. Word has length 85 [2021-11-25 20:20:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:14,905 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 3390 transitions. [2021-11-25 20:20:14,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 20:20:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3390 transitions. [2021-11-25 20:20:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 20:20:14,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:14,913 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:20:14,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:20:15,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:15,127 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:15,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:15,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1311758721, now seen corresponding path program 1 times [2021-11-25 20:20:15,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:15,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978052848] [2021-11-25 20:20:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:15,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:20:15,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:15,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978052848] [2021-11-25 20:20:15,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978052848] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:20:15,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426865406] [2021-11-25 20:20:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:15,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:15,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:20:15,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:20:15,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:20:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:15,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 20:20:15,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:20:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:20:15,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:20:15,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426865406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:15,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:20:15,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 16 [2021-11-25 20:20:15,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242339640] [2021-11-25 20:20:15,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:15,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:20:15,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:20:15,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:20:15,717 INFO L87 Difference]: Start difference. First operand 2547 states and 3390 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 20:20:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:16,629 INFO L93 Difference]: Finished difference Result 5712 states and 7943 transitions. [2021-11-25 20:20:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:20:16,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 86 [2021-11-25 20:20:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:16,657 INFO L225 Difference]: With dead ends: 5712 [2021-11-25 20:20:16,657 INFO L226 Difference]: Without dead ends: 3673 [2021-11-25 20:20:16,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:20:16,668 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 213 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:16,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 374 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:20:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2021-11-25 20:20:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3256. [2021-11-25 20:20:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 2362 states have (on average 1.2828111769686705) internal successors, (3030), 2540 states have internal predecessors, (3030), 453 states have call successors, (453), 430 states have call predecessors, (453), 440 states have return successors, (903), 447 states have call predecessors, (903), 453 states have call successors, (903) [2021-11-25 20:20:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 4386 transitions. [2021-11-25 20:20:16,945 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 4386 transitions. Word has length 86 [2021-11-25 20:20:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:16,947 INFO L470 AbstractCegarLoop]: Abstraction has 3256 states and 4386 transitions. [2021-11-25 20:20:16,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 5 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 20:20:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 4386 transitions. [2021-11-25 20:20:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:20:16,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:16,956 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:20:16,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-25 20:20:17,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:17,179 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1029364749, now seen corresponding path program 1 times [2021-11-25 20:20:17,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:17,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480893475] [2021-11-25 20:20:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:17,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:20:17,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:17,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480893475] [2021-11-25 20:20:17,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480893475] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:20:17,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812886290] [2021-11-25 20:20:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:17,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:17,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:20:17,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:20:17,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:20:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:17,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 20:20:17,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:20:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:20:17,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:20:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:20:18,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812886290] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:20:18,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [589146241] [2021-11-25 20:20:18,505 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2021-11-25 20:20:18,505 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:20:18,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:20:18,506 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:20:18,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:20:30,714 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 351 for LOIs [2021-11-25 20:20:30,788 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 63 for LOIs [2021-11-25 20:20:31,116 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__methaneAlarm with input of size 63 for LOIs [2021-11-25 20:20:31,211 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 64 for LOIs [2021-11-25 20:20:31,222 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 80 for LOIs [2021-11-25 20:20:31,242 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__lowWaterSensor with input of size 61 for LOIs [2021-11-25 20:20:31,494 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__before__methaneQuery with input of size 65 for LOIs [2021-11-25 20:20:31,503 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:20:51,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [589146241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:51,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:20:51,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [12, 9, 11] total 74 [2021-11-25 20:20:51,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628646945] [2021-11-25 20:20:51,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:51,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 20:20:51,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:51,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 20:20:51,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=629, Invalid=4773, Unknown=0, NotChecked=0, Total=5402 [2021-11-25 20:20:51,903 INFO L87 Difference]: Start difference. First operand 3256 states and 4386 transitions. Second operand has 48 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-25 20:21:45,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:45,822 INFO L93 Difference]: Finished difference Result 6450 states and 8791 transitions. [2021-11-25 20:21:45,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-25 20:21:45,823 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) Word has length 89 [2021-11-25 20:21:45,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:45,858 INFO L225 Difference]: With dead ends: 6450 [2021-11-25 20:21:45,859 INFO L226 Difference]: Without dead ends: 4658 [2021-11-25 20:21:45,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 194 SyntacticMatches, 12 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7903 ImplicationChecksByTransitivity, 66.7s TimeCoverageRelationStatistics Valid=1925, Invalid=16165, Unknown=0, NotChecked=0, Total=18090 [2021-11-25 20:21:45,874 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 682 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 6003 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 6477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 6003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:45,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 1505 Invalid, 6477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 6003 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 20:21:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-11-25 20:21:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4281. [2021-11-25 20:21:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 3132 states have (on average 1.2825670498084292) internal successors, (4017), 3322 states have internal predecessors, (4017), 576 states have call successors, (576), 553 states have call predecessors, (576), 572 states have return successors, (1193), 579 states have call predecessors, (1193), 576 states have call successors, (1193) [2021-11-25 20:21:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 5786 transitions. [2021-11-25 20:21:46,439 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 5786 transitions. Word has length 89 [2021-11-25 20:21:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:46,441 INFO L470 AbstractCegarLoop]: Abstraction has 4281 states and 5786 transitions. [2021-11-25 20:21:46,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-25 20:21:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 5786 transitions. [2021-11-25 20:21:46,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 20:21:46,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:46,453 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:46,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:46,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 20:21:46,670 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2117007430, now seen corresponding path program 1 times [2021-11-25 20:21:46,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:46,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239431567] [2021-11-25 20:21:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:46,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:21:46,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:46,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239431567] [2021-11-25 20:21:46,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239431567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:46,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:46,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:21:46,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720323016] [2021-11-25 20:21:46,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:46,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:21:46,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:46,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:21:46,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:21:46,725 INFO L87 Difference]: Start difference. First operand 4281 states and 5786 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:21:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:47,161 INFO L93 Difference]: Finished difference Result 6279 states and 8493 transitions. [2021-11-25 20:21:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:21:47,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 94 [2021-11-25 20:21:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:47,192 INFO L225 Difference]: With dead ends: 6279 [2021-11-25 20:21:47,192 INFO L226 Difference]: Without dead ends: 4382 [2021-11-25 20:21:47,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:21:47,204 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 80 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:47,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 267 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:21:47,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2021-11-25 20:21:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4380. [2021-11-25 20:21:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 3209 states have (on average 1.27547522592708) internal successors, (4093), 3401 states have internal predecessors, (4093), 590 states have call successors, (590), 567 states have call predecessors, (590), 580 states have return successors, (1121), 587 states have call predecessors, (1121), 590 states have call successors, (1121) [2021-11-25 20:21:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 5804 transitions. [2021-11-25 20:21:47,788 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 5804 transitions. Word has length 94 [2021-11-25 20:21:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:47,789 INFO L470 AbstractCegarLoop]: Abstraction has 4380 states and 5804 transitions. [2021-11-25 20:21:47,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:21:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 5804 transitions. [2021-11-25 20:21:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:21:47,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:47,802 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:47,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:21:47,803 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:47,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash -831968201, now seen corresponding path program 1 times [2021-11-25 20:21:47,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:47,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705379384] [2021-11-25 20:21:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:47,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:21:47,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:47,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705379384] [2021-11-25 20:21:47,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705379384] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:21:47,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509651900] [2021-11-25 20:21:47,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:47,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:47,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:47,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:47,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:21:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:48,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-25 20:21:48,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:21:48,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:21:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:21:50,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509651900] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:21:50,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1311315343] [2021-11-25 20:21:50,040 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-25 20:21:50,040 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:21:50,041 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:21:50,041 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:21:50,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:21:56,683 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 79 for LOIs [2021-11-25 20:21:56,697 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 78 for LOIs [2021-11-25 20:21:56,847 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__methaneAlarm with input of size 59 for LOIs [2021-11-25 20:21:57,089 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 80 for LOIs [2021-11-25 20:21:57,103 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__before__lowWaterSensor with input of size 61 for LOIs [2021-11-25 20:21:57,277 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__before__methaneQuery with input of size 65 for LOIs [2021-11-25 20:21:57,284 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 67 for LOIs [2021-11-25 20:21:57,290 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:22:14,614 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '81386#(and (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~2#1|) (<= 0 (+ ~__SELECTED_FEATURE_lowWaterSensor~0 2147483648)) (<= ~__SELECTED_FEATURE_lowWaterSensor~0 2147483647) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (<= 0 (+ ~__SELECTED_FEATURE_methaneQuery~0 2147483648)) (<= ~__SELECTED_FEATURE_highWaterSensor~0 2147483647) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_startCommand~0)) (<= ~__SELECTED_FEATURE_methaneQuery~0 2147483647) (<= 0 (+ 2147483648 ~__SELECTED_FEATURE_highWaterSensor~0)) (= ~__SELECTED_FEATURE_methaneAlarm~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 1) (<= ~__SELECTED_FEATURE_startCommand~0 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~9#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= ~__SELECTED_FEATURE_base~0 1) (<= 0 (+ ~__SELECTED_FEATURE_stopCommand~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= |timeShift_getWaterLevel_~retValue_acc~9#1| ~waterLevel~0) (<= ~__SELECTED_FEATURE_stopCommand~0 2147483647) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~2#1|))' at error location [2021-11-25 20:22:14,614 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:22:14,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:22:14,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 33 [2021-11-25 20:22:14,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768288716] [2021-11-25 20:22:14,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:22:14,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-25 20:22:14,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-25 20:22:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=619, Invalid=5701, Unknown=0, NotChecked=0, Total=6320 [2021-11-25 20:22:14,619 INFO L87 Difference]: Start difference. First operand 4380 states and 5804 transitions. Second operand has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 27 states have internal predecessors, (133), 16 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) [2021-11-25 20:22:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:19,138 INFO L93 Difference]: Finished difference Result 8022 states and 10679 transitions. [2021-11-25 20:22:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-25 20:22:19,147 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 27 states have internal predecessors, (133), 16 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) Word has length 89 [2021-11-25 20:22:19,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:19,195 INFO L225 Difference]: With dead ends: 8022 [2021-11-25 20:22:19,195 INFO L226 Difference]: Without dead ends: 7025 [2021-11-25 20:22:19,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 203 SyntacticMatches, 7 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6473 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=1288, Invalid=12754, Unknown=0, NotChecked=0, Total=14042 [2021-11-25 20:22:19,208 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1597 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 3017 mSolverCounterSat, 921 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 921 IncrementalHoareTripleChecker+Valid, 3017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:19,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 1441 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [921 Valid, 3017 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 20:22:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2021-11-25 20:22:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 4930. [2021-11-25 20:22:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 3615 states have (on average 1.2666666666666666) internal successors, (4579), 3838 states have internal predecessors, (4579), 662 states have call successors, (662), 635 states have call predecessors, (662), 652 states have return successors, (1257), 663 states have call predecessors, (1257), 662 states have call successors, (1257) [2021-11-25 20:22:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 6498 transitions. [2021-11-25 20:22:19,820 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 6498 transitions. Word has length 89 [2021-11-25 20:22:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:19,821 INFO L470 AbstractCegarLoop]: Abstraction has 4930 states and 6498 transitions. [2021-11-25 20:22:19,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 27 states have internal predecessors, (133), 16 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) [2021-11-25 20:22:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 6498 transitions. [2021-11-25 20:22:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 20:22:19,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:19,840 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:19,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:22:20,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 20:22:20,055 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:22:20,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1864536106, now seen corresponding path program 1 times [2021-11-25 20:22:20,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:20,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933560689] [2021-11-25 20:22:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:20,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-25 20:22:20,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:20,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933560689] [2021-11-25 20:22:20,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933560689] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:22:20,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396039484] [2021-11-25 20:22:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:20,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:22:20,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:22:20,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:22:20,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:22:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:20,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:22:20,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:22:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-25 20:22:20,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:22:20,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396039484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:20,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:22:20,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:22:20,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449347839] [2021-11-25 20:22:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:20,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:22:20,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:22:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:22:20,419 INFO L87 Difference]: Start difference. First operand 4930 states and 6498 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 20:22:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:20,863 INFO L93 Difference]: Finished difference Result 7308 states and 9543 transitions. [2021-11-25 20:22:20,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:22:20,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 121 [2021-11-25 20:22:20,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:20,889 INFO L225 Difference]: With dead ends: 7308 [2021-11-25 20:22:20,890 INFO L226 Difference]: Without dead ends: 4952 [2021-11-25 20:22:20,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:22:20,900 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 67 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:20,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 277 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:22:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2021-11-25 20:22:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 4950. [2021-11-25 20:22:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 3627 states have (on average 1.2575130962227736) internal successors, (4561), 3850 states have internal predecessors, (4561), 670 states have call successors, (670), 643 states have call predecessors, (670), 652 states have return successors, (1108), 663 states have call predecessors, (1108), 670 states have call successors, (1108) [2021-11-25 20:22:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 6339 transitions. [2021-11-25 20:22:21,474 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 6339 transitions. Word has length 121 [2021-11-25 20:22:21,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:21,474 INFO L470 AbstractCegarLoop]: Abstraction has 4950 states and 6339 transitions. [2021-11-25 20:22:21,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 20:22:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 6339 transitions. [2021-11-25 20:22:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-25 20:22:21,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:21,489 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:21,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:22:21,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:22:21,706 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:22:21,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:21,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1761849453, now seen corresponding path program 1 times [2021-11-25 20:22:21,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:21,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744458563] [2021-11-25 20:22:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:21,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:22:21,750 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:22:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:22:21,850 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:22:21,851 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:22:21,852 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:22:21,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:22:21,857 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:21,861 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:22:22,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:22:22 BoogieIcfgContainer [2021-11-25 20:22:22,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:22:22,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:22:22,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:22:22,003 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:22:22,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:30" (3/4) ... [2021-11-25 20:22:22,005 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 20:22:22,106 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:22:22,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:22:22,106 INFO L158 Benchmark]: Toolchain (without parser) took 172968.60ms. Allocated memory was 136.3MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 110.1MB in the beginning and 602.8MB in the end (delta: -492.7MB). Peak memory consumption was 692.2MB. Max. memory is 16.1GB. [2021-11-25 20:22:22,107 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 136.3MB. Free memory was 90.7MB in the beginning and 90.6MB in the end (delta: 70.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:22:22,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.83ms. Allocated memory is still 136.3MB. Free memory was 110.1MB in the beginning and 101.7MB in the end (delta: 8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 20:22:22,108 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.40ms. Allocated memory is still 136.3MB. Free memory was 101.7MB in the beginning and 99.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 20:22:22,108 INFO L158 Benchmark]: Boogie Preprocessor took 34.48ms. Allocated memory is still 136.3MB. Free memory was 99.1MB in the beginning and 97.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:22:22,108 INFO L158 Benchmark]: RCFGBuilder took 676.52ms. Allocated memory is still 136.3MB. Free memory was 97.0MB in the beginning and 71.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-25 20:22:22,109 INFO L158 Benchmark]: TraceAbstraction took 171533.95ms. Allocated memory was 136.3MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 71.5MB in the beginning and 618.5MB in the end (delta: -547.1MB). Peak memory consumption was 639.7MB. Max. memory is 16.1GB. [2021-11-25 20:22:22,109 INFO L158 Benchmark]: Witness Printer took 103.25ms. Allocated memory is still 1.3GB. Free memory was 618.5MB in the beginning and 602.8MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 20:22:22,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 136.3MB. Free memory was 90.7MB in the beginning and 90.6MB in the end (delta: 70.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.83ms. Allocated memory is still 136.3MB. Free memory was 110.1MB in the beginning and 101.7MB in the end (delta: 8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.40ms. Allocated memory is still 136.3MB. Free memory was 101.7MB in the beginning and 99.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.48ms. Allocated memory is still 136.3MB. Free memory was 99.1MB in the beginning and 97.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 676.52ms. Allocated memory is still 136.3MB. Free memory was 97.0MB in the beginning and 71.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 171533.95ms. Allocated memory was 136.3MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 71.5MB in the beginning and 618.5MB in the end (delta: -547.1MB). Peak memory consumption was 639.7MB. Max. memory is 16.1GB. * Witness Printer took 103.25ms. Allocated memory is still 1.3GB. Free memory was 618.5MB in the beginning and 602.8MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. 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: 612]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L155] int __SELECTED_FEATURE_base ; [L156] int __SELECTED_FEATURE_highWaterSensor ; [L157] int __SELECTED_FEATURE_lowWaterSensor ; [L158] int __SELECTED_FEATURE_methaneQuery ; [L159] int __SELECTED_FEATURE_methaneAlarm ; [L160] int __SELECTED_FEATURE_stopCommand ; [L161] int __SELECTED_FEATURE_startCommand ; [L162] int __GUIDSL_ROOT_PRODUCTION ; [L200] int pumpRunning = 0; [L201] int systemActive = 1; [L786] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L983] int waterLevel = 1; [L984] int methaneLevelCritical = 0; [L131] int retValue_acc ; [L132] int tmp ; [L136] CALL select_helpers() [L1117] __GUIDSL_ROOT_PRODUCTION = 1 [L136] RET select_helpers() [L137] CALL select_features() [L1102] __SELECTED_FEATURE_base = 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1103] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1103] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=0, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=29, systemActive=1, waterLevel=1] [L1103] __SELECTED_FEATURE_highWaterSensor = select_one() [L1104] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1104] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1104] __SELECTED_FEATURE_lowWaterSensor = select_one() [L1105] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1105] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1105] __SELECTED_FEATURE_methaneQuery = select_one() [L1106] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1106] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1106] __SELECTED_FEATURE_methaneAlarm = select_one() [L1107] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1107] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=0, systemActive=1, waterLevel=1] [L1107] __SELECTED_FEATURE_stopCommand = select_one() [L1108] CALL, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1088] int retValue_acc ; [L1089] int choice = __VERIFIER_nondet_int(); [L1092] retValue_acc = choice [L1093] return (retValue_acc); [L1108] RET, EXPR select_one() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=0, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, select_one()=31, systemActive=1, waterLevel=1] [L1108] __SELECTED_FEATURE_startCommand = select_one() [L137] RET select_features() [L138] CALL, EXPR valid_product() [L1122] int retValue_acc ; [L1125] retValue_acc = __SELECTED_FEATURE_base [L1126] return (retValue_acc); [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L532] int splverifierCounter ; [L533] int tmp ; [L534] int tmp___0 ; [L535] int tmp___1 ; [L536] int tmp___2 ; [L539] splverifierCounter = 0 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND TRUE \read(tmp) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L553] CALL waterRise() VAL [\old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L1001] COND TRUE waterLevel < 2 [L1002] waterLevel = waterLevel + 1 [L553] RET waterRise() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND TRUE \read(__SELECTED_FEATURE_startCommand) [L574] CALL startSystem() [L526] systemActive = 1 [L574] RET startSystem() [L596] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L207] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L239] COND TRUE ! pumpRunning [L241] CALL, EXPR isHighWaterLevel() [L470] int retValue_acc ; [L471] int tmp ; [L472] int tmp___0 ; [L476] CALL, EXPR isHighWaterSensorDry() [L1063] int retValue_acc ; [L1066] COND FALSE !(waterLevel < 2) [L1070] retValue_acc = 0 [L1071] return (retValue_acc); [L476] RET, EXPR isHighWaterSensorDry() [L476] tmp = isHighWaterSensorDry() [L478] COND FALSE !(\read(tmp)) [L481] tmp___0 = 1 [L483] retValue_acc = tmp___0 [L484] return (retValue_acc); [L241] RET, EXPR isHighWaterLevel() [L241] tmp = isHighWaterLevel() [L243] COND TRUE \read(tmp) [L245] CALL activatePump() [L392] COND FALSE !(\read(__SELECTED_FEATURE_methaneQuery)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L399] CALL activatePump__before__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L367] pumpRunning = 1 [L399] RET activatePump__before__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L245] RET activatePump() [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L222] RET __utac_acc__Specification4_spec__1() [L596] RET timeShift() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND TRUE \read(__SELECTED_FEATURE_startCommand) [L574] CALL startSystem() [L526] systemActive = 1 [L574] RET startSystem() [L596] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L207] COND TRUE \read(pumpRunning) [L209] CALL lowerWaterLevel() [L989] COND TRUE waterLevel > 0 [L990] waterLevel = waterLevel - 1 [L209] RET lowerWaterLevel() [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L239] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L254] FCALL processEnvironment__before__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L222] RET __utac_acc__Specification4_spec__1() [L596] RET timeShift() VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L541] COND TRUE 1 VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L543] COND TRUE splverifierCounter < 4 [L549] tmp = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L559] tmp___0 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___0)) VAL [__GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L569] tmp___2 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___2) [L572] COND TRUE \read(__SELECTED_FEATURE_startCommand) [L574] CALL startSystem() [L526] systemActive = 1 [L574] RET startSystem() [L596] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L207] COND TRUE \read(pumpRunning) [L209] CALL lowerWaterLevel() [L989] COND TRUE waterLevel > 0 [L990] waterLevel = waterLevel - 1 [L209] RET lowerWaterLevel() [L214] COND TRUE \read(systemActive) [L216] CALL processEnvironment() [L350] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L357] CALL processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L307] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L314] CALL processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L264] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L266] CALL processEnvironment__role__highWaterSensor() [L236] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L239] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L254] FCALL processEnvironment__before__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L266] RET processEnvironment__role__highWaterSensor() [L314] RET processEnvironment__before__lowWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L357] RET processEnvironment__before__methaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L216] RET processEnvironment() [L222] CALL __utac_acc__Specification4_spec__1() [L166] int tmp ; [L167] int tmp___0 ; [L171] CALL, EXPR getWaterLevel() [L1054] int retValue_acc ; [L1057] retValue_acc = waterLevel [L1058] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp = getWaterLevel() [L173] COND TRUE tmp == 0 [L175] CALL, EXPR isPumpRunning() [L425] int retValue_acc ; [L428] retValue_acc = pumpRunning [L429] return (retValue_acc); [L175] RET, EXPR isPumpRunning() [L175] tmp___0 = isPumpRunning() [L177] COND TRUE \read(tmp___0) [L179] CALL __automaton_fail() [L612] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, __GUIDSL_ROOT_PRODUCTION=1, __SELECTED_FEATURE_base=1, __SELECTED_FEATURE_highWaterSensor=29, __SELECTED_FEATURE_lowWaterSensor=0, __SELECTED_FEATURE_methaneAlarm=0, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_startCommand=31, __SELECTED_FEATURE_stopCommand=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 171.3s, OverallIterations: 17, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 64.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4472 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4410 mSDsluCounter, 6839 SdHoareTripleChecker+Invalid, 10.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5190 mSDsCounter, 2187 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11774 IncrementalHoareTripleChecker+Invalid, 13961 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2187 mSolverCounterUnsat, 2308 mSDtfsCounter, 11774 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1386 GetRequests, 987 SyntacticMatches, 21 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17400 ImplicationChecksByTransitivity, 103.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4950occurred in iteration=16, InterpolantAutomatonStates: 218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 3031 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 1947 NumberOfCodeBlocks, 1947 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2059 ConstructedInterpolants, 0 QuantifiedInterpolants, 8013 SizeOfPredicates, 30 NumberOfNonLiveVariables, 3780 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 26 InterpolantComputations, 13 PerfectInterpolantSequences, 1115/1259 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: OVERALL_TIME: 13.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 78, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 85, TOOLS_POST_TIME: 2.8s, TOOLS_POST_CALL_APPLICATIONS: 54, TOOLS_POST_CALL_TIME: 6.4s, TOOLS_POST_RETURN_APPLICATIONS: 42, TOOLS_POST_RETURN_TIME: 2.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 181, TOOLS_QUANTIFIERELIM_TIME: 11.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 1.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 228, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 45, DOMAIN_JOIN_TIME: 1.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 78, DOMAIN_ISBOTTOM_TIME: 0.3s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 6.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 6.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 42, CALL_SUMMARIZER_CACHE_MISSES: 8, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1225, DAG_COMPRESSION_RETAINED_NODES: 200, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 20:22:22,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd799c87-362a-43a7-ad42-5514a6e22423/bin/utaipan-eEHZpOm5b7/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