./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:34:00,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:34:00,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:34:00,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:34:00,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:34:00,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:34:00,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:34:00,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:34:00,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:34:00,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:34:00,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:34:00,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:34:00,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:34:00,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:34:00,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:34:00,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:34:00,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:34:00,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:34:00,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:34:00,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:34:00,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:34:00,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:34:00,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:34:00,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:34:00,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:34:00,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:34:00,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:34:00,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:34:00,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:34:00,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:34:00,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:34:00,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:34:00,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:34:00,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:34:00,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:34:00,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:34:00,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:34:00,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:34:00,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:34:00,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:34:00,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:34:00,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:34:00,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:34:00,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:34:00,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:34:00,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:34:00,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:34:00,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:34:00,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:34:00,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:34:00,964 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:34:00,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:34:00,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:34:00,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:34:00,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:34:00,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:34:00,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:34:00,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:34:00,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:34:00,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:34:00,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:34:00,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:34:00,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:34:00,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:34:00,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:34:00,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:34:00,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:34:00,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:34:00,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:34:00,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:34:00,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:34:00,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:34:00,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:34:00,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:34:00,973 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:34:00,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:34:00,974 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 [2022-11-25 18:34:01,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:34:01,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:34:01,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:34:01,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:34:01,294 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:34:01,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2022-11-25 18:34:04,429 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:34:04,691 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:34:04,692 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2022-11-25 18:34:04,703 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/data/96f0ac8ac/ca02b696bf5e4d94956259f788d33550/FLAG447073c98 [2022-11-25 18:34:04,718 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/data/96f0ac8ac/ca02b696bf5e4d94956259f788d33550 [2022-11-25 18:34:04,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:34:04,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:34:04,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:34:04,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:34:04,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:34:04,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:34:04" (1/1) ... [2022-11-25 18:34:04,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d3af22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:04, skipping insertion in model container [2022-11-25 18:34:04,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:34:04" (1/1) ... [2022-11-25 18:34:04,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:34:04,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:34:05,059 WARN L237 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_fd9a7793-393a-41c5-a482-c32e9047f935/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2022-11-25 18:34:05,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:34:05,108 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:34:05,249 WARN L237 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_fd9a7793-393a-41c5-a482-c32e9047f935/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2022-11-25 18:34:05,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:34:05,294 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:34:05,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05 WrapperNode [2022-11-25 18:34:05,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:34:05,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:34:05,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:34:05,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:34:05,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,385 INFO L138 Inliner]: procedures = 55, calls = 101, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 206 [2022-11-25 18:34:05,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:34:05,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:34:05,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:34:05,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:34:05,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:34:05,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:34:05,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:34:05,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:34:05,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (1/1) ... [2022-11-25 18:34:05,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:34:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:34:05,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:34:05,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:34:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:34:05,530 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-25 18:34:05,530 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-25 18:34:05,530 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 18:34:05,531 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 18:34:05,531 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 18:34:05,533 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 18:34:05,534 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-25 18:34:05,534 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-25 18:34:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-25 18:34:05,535 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-25 18:34:05,535 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-25 18:34:05,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-25 18:34:05,536 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-25 18:34:05,536 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-25 18:34:05,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:34:05,536 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-25 18:34:05,537 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-25 18:34:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:34:05,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:34:05,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:34:05,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:34:06,037 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:34:06,056 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:34:06,057 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 18:34:06,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:34:06 BoogieIcfgContainer [2022-11-25 18:34:06,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:34:06,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:34:06,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:34:06,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:34:06,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:34:04" (1/3) ... [2022-11-25 18:34:06,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eba51a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:34:06, skipping insertion in model container [2022-11-25 18:34:06,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:05" (2/3) ... [2022-11-25 18:34:06,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eba51a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:34:06, skipping insertion in model container [2022-11-25 18:34:06,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:34:06" (3/3) ... [2022-11-25 18:34:06,085 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2022-11-25 18:34:06,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:34:06,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:34:06,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:34:06,185 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@130de911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:34:06,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:34:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 71 states have (on average 1.380281690140845) internal successors, (98), 80 states have internal predecessors, (98), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-25 18:34:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 18:34:06,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:06,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:06,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:06,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1084900160, now seen corresponding path program 1 times [2022-11-25 18:34:06,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:06,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111064786] [2022-11-25 18:34:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:06,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:06,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:06,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111064786] [2022-11-25 18:34:06,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111064786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:06,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:06,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:34:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544109471] [2022-11-25 18:34:06,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:06,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:34:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:06,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:34:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:34:06,564 INFO L87 Difference]: Start difference. First operand has 95 states, 71 states have (on average 1.380281690140845) internal successors, (98), 80 states have internal predecessors, (98), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:06,602 INFO L93 Difference]: Finished difference Result 182 states and 247 transitions. [2022-11-25 18:34:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:34:06,604 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-25 18:34:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:06,615 INFO L225 Difference]: With dead ends: 182 [2022-11-25 18:34:06,615 INFO L226 Difference]: Without dead ends: 86 [2022-11-25 18:34:06,619 INFO L412 NwaCegarLoop]: 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 [2022-11-25 18:34:06,625 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:06,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:34:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-25 18:34:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-25 18:34:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.3125) internal successors, (84), 72 states have internal predecessors, (84), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 18:34:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2022-11-25 18:34:06,707 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 19 [2022-11-25 18:34:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:06,709 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2022-11-25 18:34:06,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2022-11-25 18:34:06,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 18:34:06,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:06,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:34:06,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:06,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1508560896, now seen corresponding path program 1 times [2022-11-25 18:34:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:06,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267576602] [2022-11-25 18:34:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:06,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:06,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:06,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267576602] [2022-11-25 18:34:06,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267576602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:06,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:06,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:34:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013351299] [2022-11-25 18:34:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:06,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:34:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:34:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:34:06,848 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:06,870 INFO L93 Difference]: Finished difference Result 134 states and 172 transitions. [2022-11-25 18:34:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:34:06,871 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-25 18:34:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:06,873 INFO L225 Difference]: With dead ends: 134 [2022-11-25 18:34:06,873 INFO L226 Difference]: Without dead ends: 77 [2022-11-25 18:34:06,874 INFO L412 NwaCegarLoop]: 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 [2022-11-25 18:34:06,876 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 16 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:06,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 175 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:34:06,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-25 18:34:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-25 18:34:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 66 states have internal predecessors, (77), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 18:34:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2022-11-25 18:34:06,889 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 20 [2022-11-25 18:34:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:06,890 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2022-11-25 18:34:06,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2022-11-25 18:34:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 18:34:06,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:06,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:06,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:34:06,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:06,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash -195731676, now seen corresponding path program 1 times [2022-11-25 18:34:06,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:06,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499163472] [2022-11-25 18:34:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:06,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:07,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:07,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499163472] [2022-11-25 18:34:07,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499163472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:07,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:07,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:34:07,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985186506] [2022-11-25 18:34:07,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:07,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:34:07,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:07,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:34:07,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:34:07,147 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:07,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:07,448 INFO L93 Difference]: Finished difference Result 254 states and 334 transitions. [2022-11-25 18:34:07,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:34:07,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-25 18:34:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:07,454 INFO L225 Difference]: With dead ends: 254 [2022-11-25 18:34:07,464 INFO L226 Difference]: Without dead ends: 184 [2022-11-25 18:34:07,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:34:07,466 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 203 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:07,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 472 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:34:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-25 18:34:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2022-11-25 18:34:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 133 states have (on average 1.3609022556390977) internal successors, (181), 151 states have internal predecessors, (181), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (27), 18 states have call predecessors, (27), 26 states have call successors, (27) [2022-11-25 18:34:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 234 transitions. [2022-11-25 18:34:07,554 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 234 transitions. Word has length 24 [2022-11-25 18:34:07,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:07,555 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 234 transitions. [2022-11-25 18:34:07,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 234 transitions. [2022-11-25 18:34:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 18:34:07,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:07,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:07,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:34:07,559 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash -161871014, now seen corresponding path program 1 times [2022-11-25 18:34:07,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:07,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34832458] [2022-11-25 18:34:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:07,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:07,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:07,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34832458] [2022-11-25 18:34:07,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34832458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:07,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:07,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:34:07,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606914370] [2022-11-25 18:34:07,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:07,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:34:07,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:07,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:34:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:34:07,821 INFO L87 Difference]: Start difference. First operand 178 states and 234 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:07,981 INFO L93 Difference]: Finished difference Result 503 states and 687 transitions. [2022-11-25 18:34:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:34:07,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-25 18:34:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:07,987 INFO L225 Difference]: With dead ends: 503 [2022-11-25 18:34:07,987 INFO L226 Difference]: Without dead ends: 332 [2022-11-25 18:34:07,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:34:07,991 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 70 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:07,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 399 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:34:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-25 18:34:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-11-25 18:34:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 246 states have (on average 1.3333333333333333) internal successors, (328), 278 states have internal predecessors, (328), 52 states have call successors, (52), 36 states have call predecessors, (52), 33 states have return successors, (58), 33 states have call predecessors, (58), 52 states have call successors, (58) [2022-11-25 18:34:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 438 transitions. [2022-11-25 18:34:08,098 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 438 transitions. Word has length 28 [2022-11-25 18:34:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:08,098 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 438 transitions. [2022-11-25 18:34:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 438 transitions. [2022-11-25 18:34:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 18:34:08,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:08,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:34:08,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash 330059103, now seen corresponding path program 1 times [2022-11-25 18:34:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:08,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564920382] [2022-11-25 18:34:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:08,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:08,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:08,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564920382] [2022-11-25 18:34:08,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564920382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:08,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:08,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:34:08,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336017448] [2022-11-25 18:34:08,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:08,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:34:08,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:08,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:34:08,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:34:08,258 INFO L87 Difference]: Start difference. First operand 332 states and 438 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:08,412 INFO L93 Difference]: Finished difference Result 776 states and 1045 transitions. [2022-11-25 18:34:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:34:08,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-25 18:34:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:08,427 INFO L225 Difference]: With dead ends: 776 [2022-11-25 18:34:08,434 INFO L226 Difference]: Without dead ends: 451 [2022-11-25 18:34:08,442 INFO L412 NwaCegarLoop]: 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 [2022-11-25 18:34:08,444 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 60 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:08,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 158 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:34:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-25 18:34:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 440. [2022-11-25 18:34:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 338 states have (on average 1.2840236686390532) internal successors, (434), 365 states have internal predecessors, (434), 53 states have call successors, (53), 51 states have call predecessors, (53), 48 states have return successors, (75), 47 states have call predecessors, (75), 53 states have call successors, (75) [2022-11-25 18:34:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 562 transitions. [2022-11-25 18:34:08,561 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 562 transitions. Word has length 30 [2022-11-25 18:34:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:08,562 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 562 transitions. [2022-11-25 18:34:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 562 transitions. [2022-11-25 18:34:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 18:34:08,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:08,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:08,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:34:08,573 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:08,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1224222912, now seen corresponding path program 1 times [2022-11-25 18:34:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:08,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265257109] [2022-11-25 18:34:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:34:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:08,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265257109] [2022-11-25 18:34:08,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265257109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:08,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:08,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:34:08,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438707630] [2022-11-25 18:34:08,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:08,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:34:08,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:34:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:34:08,785 INFO L87 Difference]: Start difference. First operand 440 states and 562 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:34:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:09,211 INFO L93 Difference]: Finished difference Result 535 states and 689 transitions. [2022-11-25 18:34:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:34:09,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-25 18:34:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:09,218 INFO L225 Difference]: With dead ends: 535 [2022-11-25 18:34:09,218 INFO L226 Difference]: Without dead ends: 533 [2022-11-25 18:34:09,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:34:09,234 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 142 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:09,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 325 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:34:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-25 18:34:09,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 504. [2022-11-25 18:34:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 385 states have (on average 1.2675324675324675) internal successors, (488), 423 states have internal predecessors, (488), 61 states have call successors, (61), 51 states have call predecessors, (61), 57 states have return successors, (96), 53 states have call predecessors, (96), 61 states have call successors, (96) [2022-11-25 18:34:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 645 transitions. [2022-11-25 18:34:09,337 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 645 transitions. Word has length 32 [2022-11-25 18:34:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:09,339 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 645 transitions. [2022-11-25 18:34:09,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:34:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 645 transitions. [2022-11-25 18:34:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 18:34:09,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:09,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:09,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:34:09,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:09,349 INFO L85 PathProgramCache]: Analyzing trace with hash -677060791, now seen corresponding path program 1 times [2022-11-25 18:34:09,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:09,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220223791] [2022-11-25 18:34:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:09,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:09,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:34:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:34:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:34:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:09,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220223791] [2022-11-25 18:34:09,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220223791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:09,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:09,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:34:09,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62440034] [2022-11-25 18:34:09,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:09,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:34:09,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:34:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:34:09,586 INFO L87 Difference]: Start difference. First operand 504 states and 645 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 18:34:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:10,051 INFO L93 Difference]: Finished difference Result 1115 states and 1480 transitions. [2022-11-25 18:34:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:34:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-25 18:34:10,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:10,057 INFO L225 Difference]: With dead ends: 1115 [2022-11-25 18:34:10,057 INFO L226 Difference]: Without dead ends: 618 [2022-11-25 18:34:10,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:34:10,063 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 139 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:10,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 308 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:34:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-11-25 18:34:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 556. [2022-11-25 18:34:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 431 states have (on average 1.2529002320185614) internal successors, (540), 469 states have internal predecessors, (540), 61 states have call successors, (61), 51 states have call predecessors, (61), 63 states have return successors, (104), 57 states have call predecessors, (104), 61 states have call successors, (104) [2022-11-25 18:34:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 705 transitions. [2022-11-25 18:34:10,157 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 705 transitions. Word has length 50 [2022-11-25 18:34:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:10,159 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 705 transitions. [2022-11-25 18:34:10,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 18:34:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 705 transitions. [2022-11-25 18:34:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 18:34:10,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:10,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:10,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:34:10,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash -458206073, now seen corresponding path program 1 times [2022-11-25 18:34:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:10,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642261449] [2022-11-25 18:34:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:10,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:34:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:34:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:10,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:34:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:10,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642261449] [2022-11-25 18:34:10,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642261449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:10,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:10,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:34:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379301661] [2022-11-25 18:34:10,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:10,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:34:10,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:34:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:34:10,380 INFO L87 Difference]: Start difference. First operand 556 states and 705 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 18:34:10,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:10,923 INFO L93 Difference]: Finished difference Result 1084 states and 1415 transitions. [2022-11-25 18:34:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:34:10,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-25 18:34:10,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:10,928 INFO L225 Difference]: With dead ends: 1084 [2022-11-25 18:34:10,928 INFO L226 Difference]: Without dead ends: 535 [2022-11-25 18:34:10,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:34:10,934 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 199 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:10,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 278 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:34:10,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-11-25 18:34:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 433. [2022-11-25 18:34:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 334 states have (on average 1.251497005988024) internal successors, (418), 363 states have internal predecessors, (418), 50 states have call successors, (50), 42 states have call predecessors, (50), 48 states have return successors, (76), 44 states have call predecessors, (76), 50 states have call successors, (76) [2022-11-25 18:34:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 544 transitions. [2022-11-25 18:34:11,014 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 544 transitions. Word has length 50 [2022-11-25 18:34:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:11,014 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 544 transitions. [2022-11-25 18:34:11,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 18:34:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 544 transitions. [2022-11-25 18:34:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 18:34:11,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:11,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:11,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:34:11,019 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:11,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash -592219579, now seen corresponding path program 1 times [2022-11-25 18:34:11,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:11,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74684755] [2022-11-25 18:34:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:11,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:34:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:34:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:11,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:34:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:11,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:11,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74684755] [2022-11-25 18:34:11,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74684755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:11,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:11,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:34:11,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033626907] [2022-11-25 18:34:11,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:11,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:34:11,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:34:11,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:34:11,216 INFO L87 Difference]: Start difference. First operand 433 states and 544 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 18:34:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:11,849 INFO L93 Difference]: Finished difference Result 987 states and 1316 transitions. [2022-11-25 18:34:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 18:34:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-25 18:34:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:11,860 INFO L225 Difference]: With dead ends: 987 [2022-11-25 18:34:11,860 INFO L226 Difference]: Without dead ends: 668 [2022-11-25 18:34:11,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:34:11,865 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 228 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:11,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 407 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:34:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-25 18:34:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 643. [2022-11-25 18:34:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 499 states have (on average 1.2304609218436873) internal successors, (614), 536 states have internal predecessors, (614), 72 states have call successors, (72), 62 states have call predecessors, (72), 71 states have return successors, (137), 72 states have call predecessors, (137), 72 states have call successors, (137) [2022-11-25 18:34:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 823 transitions. [2022-11-25 18:34:11,992 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 823 transitions. Word has length 50 [2022-11-25 18:34:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:11,994 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 823 transitions. [2022-11-25 18:34:11,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 18:34:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 823 transitions. [2022-11-25 18:34:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 18:34:12,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:12,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:12,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:34:12,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:12,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash -410367651, now seen corresponding path program 1 times [2022-11-25 18:34:12,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:12,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24549193] [2022-11-25 18:34:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:12,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 18:34:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:34:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:34:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:34:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:34:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 18:34:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:34:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:34:12,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:12,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24549193] [2022-11-25 18:34:12,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24549193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:34:12,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196489363] [2022-11-25 18:34:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:12,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:34:12,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:34:12,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:34:12,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:34:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:12,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:34:12,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:34:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:34:12,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:34:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:34:12,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196489363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:34:12,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:34:12,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2022-11-25 18:34:12,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398886442] [2022-11-25 18:34:12,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:34:12,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:34:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:34:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:34:12,936 INFO L87 Difference]: Start difference. First operand 643 states and 823 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-25 18:34:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:34:13,887 INFO L93 Difference]: Finished difference Result 1532 states and 2065 transitions. [2022-11-25 18:34:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-25 18:34:13,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2022-11-25 18:34:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:34:13,896 INFO L225 Difference]: With dead ends: 1532 [2022-11-25 18:34:13,896 INFO L226 Difference]: Without dead ends: 1003 [2022-11-25 18:34:13,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 183 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2022-11-25 18:34:13,903 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 340 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:34:13,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 481 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 18:34:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2022-11-25 18:34:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 874. [2022-11-25 18:34:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 670 states have (on average 1.2358208955223882) internal successors, (828), 723 states have internal predecessors, (828), 103 states have call successors, (103), 89 states have call predecessors, (103), 100 states have return successors, (206), 95 states have call predecessors, (206), 103 states have call successors, (206) [2022-11-25 18:34:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1137 transitions. [2022-11-25 18:34:14,028 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1137 transitions. Word has length 86 [2022-11-25 18:34:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:34:14,030 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1137 transitions. [2022-11-25 18:34:14,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-25 18:34:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1137 transitions. [2022-11-25 18:34:14,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-25 18:34:14,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:34:14,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:14,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:34:14,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:34:14,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:34:14,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:14,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1984072587, now seen corresponding path program 2 times [2022-11-25 18:34:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:14,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678235676] [2022-11-25 18:34:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:14,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:34:14,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:34:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:34:14,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:34:14,355 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:34:14,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 18:34:14,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:34:14,364 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:14,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:34:14,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:34:14 BoogieIcfgContainer [2022-11-25 18:34:14,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:34:14,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:34:14,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:34:14,462 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:34:14,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:34:06" (3/4) ... [2022-11-25 18:34:14,465 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 18:34:14,598 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:34:14,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:34:14,599 INFO L158 Benchmark]: Toolchain (without parser) took 9875.92ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 143.3MB in the beginning and 98.9MB in the end (delta: 44.4MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. [2022-11-25 18:34:14,599 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:34:14,599 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.58ms. Allocated memory is still 188.7MB. Free memory was 143.3MB in the beginning and 124.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 18:34:14,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.51ms. Allocated memory is still 188.7MB. Free memory was 124.4MB in the beginning and 122.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:34:14,600 INFO L158 Benchmark]: Boogie Preprocessor took 34.11ms. Allocated memory is still 188.7MB. Free memory was 122.3MB in the beginning and 120.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:34:14,606 INFO L158 Benchmark]: RCFGBuilder took 649.59ms. Allocated memory is still 188.7MB. Free memory was 120.2MB in the beginning and 104.3MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:34:14,607 INFO L158 Benchmark]: TraceAbstraction took 8387.76ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 103.5MB in the beginning and 107.3MB in the end (delta: -3.8MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2022-11-25 18:34:14,607 INFO L158 Benchmark]: Witness Printer took 136.51ms. Allocated memory is still 226.5MB. Free memory was 107.3MB in the beginning and 98.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 18:34:14,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.58ms. Allocated memory is still 188.7MB. Free memory was 143.3MB in the beginning and 124.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.51ms. Allocated memory is still 188.7MB. Free memory was 124.4MB in the beginning and 122.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.11ms. Allocated memory is still 188.7MB. Free memory was 122.3MB in the beginning and 120.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 649.59ms. Allocated memory is still 188.7MB. Free memory was 120.2MB in the beginning and 104.3MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8387.76ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 103.5MB in the beginning and 107.3MB in the end (delta: -3.8MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * Witness Printer took 136.51ms. Allocated memory is still 226.5MB. Free memory was 107.3MB in the beginning and 98.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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: 838]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L609] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L869] int retValue_acc ; [L872] retValue_acc = 1 [L873] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L173] tmp = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L177] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L177] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L210] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L237] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L292] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L295] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L310] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L266] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L406] int retValue_acc ; [L407] int tmp ; [L408] int tmp___0 ; [L412] CALL, EXPR isHighWaterSensorDry() [L958] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L412] RET, EXPR isHighWaterSensorDry() [L412] tmp = isHighWaterSensorDry() [L414] COND FALSE !(\read(tmp)) [L417] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L419] retValue_acc = tmp___0 [L420] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L275] CALL activatePump() [L325] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L329] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L350] int retValue_acc ; [L354] CALL, EXPR isMethaneLevelCritical() [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L354] RET, EXPR isMethaneLevelCritical() [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L329] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L329] tmp = isMethaneAlarm() [L331] COND FALSE !(\read(tmp)) [L335] CALL activatePump__wrappee__highWaterSensor() [L320] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L335] RET activatePump__wrappee__highWaterSensor() [L275] RET activatePump() [L310] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification4_spec__1() [L809] int tmp ; [L810] int tmp___0 ; [L814] CALL, EXPR getWaterLevel() [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L814] RET, EXPR getWaterLevel() [L814] tmp = getWaterLevel() [L816] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L252] RET __utac_acc__Specification4_spec__1() [L210] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L210] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L237] COND TRUE \read(pumpRunning) [L239] CALL lowerWaterLevel() [L884] COND TRUE waterLevel > 0 [L885] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L239] RET lowerWaterLevel() [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L292] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L295] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L297] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L350] int retValue_acc ; [L354] CALL, EXPR isMethaneLevelCritical() [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L354] RET, EXPR isMethaneLevelCritical() [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L297] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L297] tmp = isMethaneAlarm() [L299] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L305] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L266] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L269] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L284] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L305] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification4_spec__1() [L809] int tmp ; [L810] int tmp___0 ; [L814] CALL, EXPR getWaterLevel() [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L814] RET, EXPR getWaterLevel() [L814] tmp = getWaterLevel() [L816] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L252] RET __utac_acc__Specification4_spec__1() [L210] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L210] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L237] COND TRUE \read(pumpRunning) [L239] CALL lowerWaterLevel() [L884] COND TRUE waterLevel > 0 [L885] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L239] RET lowerWaterLevel() [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L292] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L295] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L297] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L350] int retValue_acc ; [L354] CALL, EXPR isMethaneLevelCritical() [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L354] RET, EXPR isMethaneLevelCritical() [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L297] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L297] tmp = isMethaneAlarm() [L299] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L305] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L266] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L269] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L284] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L305] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification4_spec__1() [L809] int tmp ; [L810] int tmp___0 ; [L814] CALL, EXPR getWaterLevel() [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L814] RET, EXPR getWaterLevel() [L814] tmp = getWaterLevel() [L816] COND TRUE tmp == 0 [L818] CALL, EXPR isPumpRunning() [L361] int retValue_acc ; [L364] retValue_acc = pumpRunning [L365] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L818] RET, EXPR isPumpRunning() [L818] tmp___0 = isPumpRunning() [L820] COND TRUE \read(tmp___0) [L822] CALL __automaton_fail() [L838] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1419 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1397 mSDsluCounter, 3123 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2206 mSDsCounter, 379 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1862 IncrementalHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 379 mSolverCounterUnsat, 917 mSDtfsCounter, 1862 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 319 GetRequests, 222 SyntacticMatches, 9 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=874occurred in iteration=10, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 364 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 1091 SizeOfPredicates, 4 NumberOfNonLiveVariables, 305 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 49/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-25 18:34:14,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9a7793-393a-41c5-a482-c32e9047f935/bin/uautomizer-ZsLfNo2U6R/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